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34dc7c2f
BB		 1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
34dc7c2f
BB		 27#include <assert.h>
28#include <ctype.h>
29#include <errno.h>
30#include <libgen.h>
31#include <libintl.h>
32#include <libuutil.h>
33#include <libnvpair.h>
34#include <locale.h>
35#include <stddef.h>
36#include <stdio.h>
37#include <stdlib.h>
38#include <strings.h>
39#include <unistd.h>
40#include <fcntl.h>
41#include <zone.h>
42#include <sys/mkdev.h>
43#include <sys/mntent.h>
44#include <sys/mnttab.h>
45#include <sys/mount.h>
46#include <sys/stat.h>
47#include <sys/avl.h>
48
49#include <libzfs.h>
50#include <libuutil.h>
51
52#include "zfs_iter.h"
53#include "zfs_util.h"
54
55libzfs_handle_t *g_zfs;
56
57static FILE *mnttab_file;
58static char history_str[HIS_MAX_RECORD_LEN];
59
60static int zfs_do_clone(int argc, char **argv);
61static int zfs_do_create(int argc, char **argv);
62static int zfs_do_destroy(int argc, char **argv);
63static int zfs_do_get(int argc, char **argv);
64static int zfs_do_inherit(int argc, char **argv);
65static int zfs_do_list(int argc, char **argv);
66static int zfs_do_mount(int argc, char **argv);
67static int zfs_do_rename(int argc, char **argv);
68static int zfs_do_rollback(int argc, char **argv);
69static int zfs_do_set(int argc, char **argv);
70static int zfs_do_upgrade(int argc, char **argv);
71static int zfs_do_snapshot(int argc, char **argv);
72static int zfs_do_unmount(int argc, char **argv);
73static int zfs_do_share(int argc, char **argv);
74static int zfs_do_unshare(int argc, char **argv);
75static int zfs_do_send(int argc, char **argv);
76static int zfs_do_receive(int argc, char **argv);
77static int zfs_do_promote(int argc, char **argv);
78static int zfs_do_allow(int argc, char **argv);
79static int zfs_do_unallow(int argc, char **argv);
80
81/*
b128c09f 82 * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
34dc7c2f 83 */
b128c09f
BB		 84
85#ifdef DEBUG
34dc7c2f
BB		 86const char *
87_umem_debug_init(void)
88{
89 return ("default,verbose"); /* $UMEM_DEBUG setting */
90}
91
92const char *
93_umem_logging_init(void)
94{
95 return ("fail,contents"); /* $UMEM_LOGGING setting */
96}
b128c09f 97#endif
34dc7c2f
BB		 98
99typedef enum {
100 HELP_CLONE,
101 HELP_CREATE,
102 HELP_DESTROY,
103 HELP_GET,
104 HELP_INHERIT,
105 HELP_UPGRADE,
106 HELP_LIST,
107 HELP_MOUNT,
108 HELP_PROMOTE,
109 HELP_RECEIVE,
110 HELP_RENAME,
111 HELP_ROLLBACK,
112 HELP_SEND,
113 HELP_SET,
114 HELP_SHARE,
115 HELP_SNAPSHOT,
116 HELP_UNMOUNT,
117 HELP_UNSHARE,
118 HELP_ALLOW,
119 HELP_UNALLOW
120} zfs_help_t;
121
122typedef struct zfs_command {
123 const char *name;
124 int (*func)(int argc, char **argv);
125 zfs_help_t usage;
126} zfs_command_t;
127
128/*
129 * Master command table. Each ZFS command has a name, associated function, and
130 * usage message. The usage messages need to be internationalized, so we have
131 * to have a function to return the usage message based on a command index.
132 *
133 * These commands are organized according to how they are displayed in the usage
134 * message. An empty command (one with a NULL name) indicates an empty line in
135 * the generic usage message.
136 */
137static zfs_command_t command_table[] = {
138 { "create", zfs_do_create, HELP_CREATE },
139 { "destroy", zfs_do_destroy, HELP_DESTROY },
140 { NULL },
141 { "snapshot", zfs_do_snapshot, HELP_SNAPSHOT },
142 { "rollback", zfs_do_rollback, HELP_ROLLBACK },
143 { "clone", zfs_do_clone, HELP_CLONE },
144 { "promote", zfs_do_promote, HELP_PROMOTE },
145 { "rename", zfs_do_rename, HELP_RENAME },
146 { NULL },
147 { "list", zfs_do_list, HELP_LIST },
148 { NULL },
149 { "set", zfs_do_set, HELP_SET },
150 { "get", zfs_do_get, HELP_GET },
151 { "inherit", zfs_do_inherit, HELP_INHERIT },
152 { "upgrade", zfs_do_upgrade, HELP_UPGRADE },
153 { NULL },
154 { "mount", zfs_do_mount, HELP_MOUNT },
155 { "unmount", zfs_do_unmount, HELP_UNMOUNT },
156 { "share", zfs_do_share, HELP_SHARE },
157 { "unshare", zfs_do_unshare, HELP_UNSHARE },
158 { NULL },
159 { "send", zfs_do_send, HELP_SEND },
160 { "receive", zfs_do_receive, HELP_RECEIVE },
161 { NULL },
162 { "allow", zfs_do_allow, HELP_ALLOW },
163 { NULL },
164 { "unallow", zfs_do_unallow, HELP_UNALLOW },
165};
166
167#define NCOMMAND (sizeof (command_table) / sizeof (command_table[0]))
168
169zfs_command_t *current_command;
170
171static const char *
172get_usage(zfs_help_t idx)
173{
174 switch (idx) {
175 case HELP_CLONE:
b128c09f
BB		 176 return (gettext("\tclone [-p] [-o property=value] ... "
177 "<snapshot> <filesystem|volume>\n"));
34dc7c2f
BB		 178 case HELP_CREATE:
179 return (gettext("\tcreate [-p] [-o property=value] ... "
180 "<filesystem>\n"
181 "\tcreate [-ps] [-b blocksize] [-o property=value] ... "
182 "-V <size> <volume>\n"));
183 case HELP_DESTROY:
184 return (gettext("\tdestroy [-rRf] "
185 "<filesystem|volume|snapshot>\n"));
186 case HELP_GET:
187 return (gettext("\tget [-rHp] [-o field[,...]] "
188 "[-s source[,...]]\n"
189 "\t <\"all\" | property[,...]> "
190 "[filesystem|volume|snapshot] ...\n"));
191 case HELP_INHERIT:
192 return (gettext("\tinherit [-r] <property> "
b128c09f 193 "<filesystem|volume|snapshot> ...\n"));
34dc7c2f
BB		 194 case HELP_UPGRADE:
195 return (gettext("\tupgrade [-v]\n"
196 "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
197 case HELP_LIST:
198 return (gettext("\tlist [-rH] [-o property[,...]] "
199 "[-t type[,...]] [-s property] ...\n"
200 "\t [-S property] ... "
201 "[filesystem|volume|snapshot] ...\n"));
202 case HELP_MOUNT:
203 return (gettext("\tmount\n"
204 "\tmount [-vO] [-o opts] <-a | filesystem>\n"));
205 case HELP_PROMOTE:
206 return (gettext("\tpromote <clone-filesystem>\n"));
207 case HELP_RECEIVE:
208 return (gettext("\treceive [-vnF] <filesystem|volume|"
209 "snapshot>\n"
210 "\treceive [-vnF] -d <filesystem>\n"));
211 case HELP_RENAME:
212 return (gettext("\trename <filesystem|volume|snapshot> "
213 "<filesystem|volume|snapshot>\n"
214 "\trename -p <filesystem|volume> <filesystem|volume>\n"
215 "\trename -r <snapshot> <snapshot>"));
216 case HELP_ROLLBACK:
217 return (gettext("\trollback [-rRf] <snapshot>\n"));
218 case HELP_SEND:
219 return (gettext("\tsend [-R] [-[iI] snapshot] <snapshot>\n"));
220 case HELP_SET:
221 return (gettext("\tset <property=value> "
b128c09f 222 "<filesystem|volume|snapshot> ...\n"));
34dc7c2f
BB		 223 case HELP_SHARE:
224 return (gettext("\tshare <-a | filesystem>\n"));
225 case HELP_SNAPSHOT:
b128c09f 226 return (gettext("\tsnapshot [-r] [-o property=value] ... "
34dc7c2f
BB		 227 "<filesystem@snapname|volume@snapname>\n"));
228 case HELP_UNMOUNT:
229 return (gettext("\tunmount [-f] "
230 "<-a | filesystem|mountpoint>\n"));
231 case HELP_UNSHARE:
232 return (gettext("\tunshare [-f] "
233 "<-a | filesystem|mountpoint>\n"));
234 case HELP_ALLOW:
235 return (gettext("\tallow [-ldug] "
236 "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
237 "\t <filesystem|volume>\n"
238 "\tallow [-ld] -e <perm|@setname>[,...] "
239 "<filesystem|volume>\n"
240 "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
241 "\tallow -s @setname <perm|@setname>[,...] "
242 "<filesystem|volume>\n"));
243 case HELP_UNALLOW:
244 return (gettext("\tunallow [-rldug] "
245 "<\"everyone\"|user|group>[,...]\n"
246 "\t [<perm|@setname>[,...]] <filesystem|volume>\n"
247 "\tunallow [-rld] -e [<perm|@setname>[,...]] "
248 "<filesystem|volume>\n"
249 "\tunallow [-r] -c [<perm|@setname>[,...]] "
250 "<filesystem|volume>\n"
251 "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
252 "<filesystem|volume>\n"));
253 }
254
255 abort();
256 /* NOTREACHED */
257}
258
259/*
260 * Utility function to guarantee malloc() success.
261 */
262void *
263safe_malloc(size_t size)
264{
265 void *data;
266
267 if ((data = calloc(1, size)) == NULL) {
268 (void) fprintf(stderr, "internal error: out of memory\n");
269 exit(1);
270 }
271
272 return (data);
273}
274
275/*
276 * Callback routine that will print out information for each of
277 * the properties.
278 */
279static int
280usage_prop_cb(int prop, void *cb)
281{
282 FILE *fp = cb;
283
b128c09f 284 (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
34dc7c2f 285
b128c09f
BB		 286 if (zfs_prop_readonly(prop))
287 (void) fprintf(fp, " NO ");
34dc7c2f 288 else
b128c09f 289 (void) fprintf(fp, "YES ");
34dc7c2f
BB		 290
291 if (zfs_prop_inheritable(prop))
292 (void) fprintf(fp, " YES ");
293 else
294 (void) fprintf(fp, " NO ");
295
296 if (zfs_prop_values(prop) == NULL)
297 (void) fprintf(fp, "-\n");
298 else
299 (void) fprintf(fp, "%s\n", zfs_prop_values(prop));
300
301 return (ZPROP_CONT);
302}
303
304/*
305 * Display usage message. If we're inside a command, display only the usage for
306 * that command. Otherwise, iterate over the entire command table and display
307 * a complete usage message.
308 */
309static void
310usage(boolean_t requested)
311{
312 int i;
313 boolean_t show_properties = B_FALSE;
314 boolean_t show_permissions = B_FALSE;
315 FILE *fp = requested ? stdout : stderr;
316
317 if (current_command == NULL) {
318
319 (void) fprintf(fp, gettext("usage: zfs command args ...\n"));
320 (void) fprintf(fp,
321 gettext("where 'command' is one of the following:\n\n"));
322
323 for (i = 0; i < NCOMMAND; i++) {
324 if (command_table[i].name == NULL)
325 (void) fprintf(fp, "\n");
326 else
327 (void) fprintf(fp, "%s",
328 get_usage(command_table[i].usage));
329 }
330
331 (void) fprintf(fp, gettext("\nEach dataset is of the form: "
332 "pool/[dataset/]*dataset[@name]\n"));
333 } else {
334 (void) fprintf(fp, gettext("usage:\n"));
335 (void) fprintf(fp, "%s", get_usage(current_command->usage));
336 }
337
338 if (current_command != NULL &&
339 (strcmp(current_command->name, "set") == 0 ||
340 strcmp(current_command->name, "get") == 0 ||
341 strcmp(current_command->name, "inherit") == 0 ||
342 strcmp(current_command->name, "list") == 0))
343 show_properties = B_TRUE;
344
345 if (current_command != NULL &&
346 (strcmp(current_command->name, "allow") == 0 ||
347 strcmp(current_command->name, "unallow") == 0))
348 show_permissions = B_TRUE;
349
350 if (show_properties) {
351
352 (void) fprintf(fp,
353 gettext("\nThe following properties are supported:\n"));
354
355 (void) fprintf(fp, "\n\t%-14s %s %s %s\n\n",
356 "PROPERTY", "EDIT", "INHERIT", "VALUES");
357
358 /* Iterate over all properties */
359 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
360 ZFS_TYPE_DATASET);
361
362 (void) fprintf(fp, gettext("\nSizes are specified in bytes "
363 "with standard units such as K, M, G, etc.\n"));
b128c09f 364 (void) fprintf(fp, gettext("\nUser-defined properties can "
34dc7c2f
BB		 365 "be specified by using a name containing a colon (:).\n"));
366
367 } else if (show_permissions) {
368 (void) fprintf(fp,
369 gettext("\nThe following permissions are supported:\n"));
370
371 zfs_deleg_permissions();
372 } else {
34dc7c2f 373 (void) fprintf(fp,
fb5f0bc8
BB		 374 gettext("\nFor the property list, run: %s\n"),
375 "zfs set|get");
34dc7c2f 376 (void) fprintf(fp,
fb5f0bc8
BB		 377 gettext("\nFor the delegated permission list, run: %s\n"),
378 "zfs allow|unallow");
34dc7c2f
BB		 379 }
380
381 /*
382 * See comments at end of main().
383 */
384 if (getenv("ZFS_ABORT") != NULL) {
385 (void) printf("dumping core by request\n");
386 abort();
387 }
388
389 exit(requested ? 0 : 2);
390}
391
b128c09f
BB		 392static int
393parseprop(nvlist_t *props)
394{
395 char *propname = optarg;
396 char *propval, *strval;
397
398 if ((propval = strchr(propname, '=')) == NULL) {
399 (void) fprintf(stderr, gettext("missing "
400 "'=' for -o option\n"));
401 return (-1);
402 }
403 *propval = '\0';
404 propval++;
405 if (nvlist_lookup_string(props, propname, &strval) == 0) {
406 (void) fprintf(stderr, gettext("property '%s' "
407 "specified multiple times\n"), propname);
408 return (-1);
409 }
410 if (nvlist_add_string(props, propname, propval) != 0) {
411 (void) fprintf(stderr, gettext("internal "
412 "error: out of memory\n"));
413 return (-1);
414 }
415 return (0);
b128c09f
BB		 416}
417
34dc7c2f 418/*
b128c09f 419 * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
34dc7c2f
BB		 420 *
421 * Given an existing dataset, create a writable copy whose initial contents
422 * are the same as the source. The newly created dataset maintains a
423 * dependency on the original; the original cannot be destroyed so long as
424 * the clone exists.
425 *
426 * The '-p' flag creates all the non-existing ancestors of the target first.
427 */
428static int
429zfs_do_clone(int argc, char **argv)
430{
b128c09f 431 zfs_handle_t *zhp = NULL;
34dc7c2f 432 boolean_t parents = B_FALSE;
b128c09f 433 nvlist_t *props;
34dc7c2f
BB		 434 int ret;
435 int c;
436
b128c09f
BB		 437 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) {
438 (void) fprintf(stderr, gettext("internal error: "
439 "out of memory\n"));
440 return (1);
441 }
442
34dc7c2f 443 /* check options */
b128c09f 444 while ((c = getopt(argc, argv, "o:p")) != -1) {
34dc7c2f 445 switch (c) {
b128c09f
BB		 446 case 'o':
447 if (parseprop(props))
448 return (1);
449 break;
34dc7c2f
BB		 450 case 'p':
451 parents = B_TRUE;
452 break;
453 case '?':
454 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
455 optopt);
b128c09f 456 goto usage;
34dc7c2f
BB		 457 }
458 }
459
460 argc -= optind;
461 argv += optind;
462
463 /* check number of arguments */
464 if (argc < 1) {
465 (void) fprintf(stderr, gettext("missing source dataset "
466 "argument\n"));
b128c09f 467 goto usage;
34dc7c2f
BB		 468 }
469 if (argc < 2) {
470 (void) fprintf(stderr, gettext("missing target dataset "
471 "argument\n"));
b128c09f 472 goto usage;
34dc7c2f
BB		 473 }
474 if (argc > 2) {
475 (void) fprintf(stderr, gettext("too many arguments\n"));
b128c09f 476 goto usage;
34dc7c2f
BB		 477 }
478
479 /* open the source dataset */
480 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
481 return (1);
482
483 if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
484 ZFS_TYPE_VOLUME)) {
485 /*
486 * Now create the ancestors of the target dataset. If the
487 * target already exists and '-p' option was used we should not
488 * complain.
489 */
490 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
491 ZFS_TYPE_VOLUME))
492 return (0);
493 if (zfs_create_ancestors(g_zfs, argv[1]) != 0)
494 return (1);
495 }
496
497 /* pass to libzfs */
b128c09f 498 ret = zfs_clone(zhp, argv[1], props);
34dc7c2f
BB		 499
500 /* create the mountpoint if necessary */
501 if (ret == 0) {
502 zfs_handle_t *clone;
503
504 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET);
505 if (clone != NULL) {
506 if ((ret = zfs_mount(clone, NULL, 0)) == 0)
507 ret = zfs_share(clone);
508 zfs_close(clone);
509 }
510 }
511
512 zfs_close(zhp);
b128c09f 513 nvlist_free(props);
34dc7c2f 514
b128c09f
BB		 515 return (!!ret);
516
517usage:
518 if (zhp)
519 zfs_close(zhp);
520 nvlist_free(props);
521 usage(B_FALSE);
522 return (-1);
34dc7c2f
BB		 523}
524
525/*
526 * zfs create [-p] [-o prop=value] ... fs
527 * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size
528 *
529 * Create a new dataset. This command can be used to create filesystems
530 * and volumes. Snapshot creation is handled by 'zfs snapshot'.
531 * For volumes, the user must specify a size to be used.
532 *
533 * The '-s' flag applies only to volumes, and indicates that we should not try
534 * to set the reservation for this volume. By default we set a reservation
535 * equal to the size for any volume. For pools with SPA_VERSION >=
536 * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
537 *
538 * The '-p' flag creates all the non-existing ancestors of the target first.
539 */
540static int
541zfs_do_create(int argc, char **argv)
542{
543 zfs_type_t type = ZFS_TYPE_FILESYSTEM;
544 zfs_handle_t *zhp = NULL;
545 uint64_t volsize;
546 int c;
547 boolean_t noreserve = B_FALSE;
548 boolean_t bflag = B_FALSE;
549 boolean_t parents = B_FALSE;
550 int ret = 1;
b128c09f 551 nvlist_t *props;
34dc7c2f 552 uint64_t intval;
34dc7c2f
BB		 553 int canmount;
554
555 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) {
556 (void) fprintf(stderr, gettext("internal error: "
557 "out of memory\n"));
558 return (1);
559 }
560
561 /* check options */
562 while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) {
563 switch (c) {
564 case 'V':
565 type = ZFS_TYPE_VOLUME;
566 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
567 (void) fprintf(stderr, gettext("bad volume "
568 "size '%s': %s\n"), optarg,
569 libzfs_error_description(g_zfs));
570 goto error;
571 }
572
573 if (nvlist_add_uint64(props,
574 zfs_prop_to_name(ZFS_PROP_VOLSIZE),
575 intval) != 0) {
576 (void) fprintf(stderr, gettext("internal "
577 "error: out of memory\n"));
578 goto error;
579 }
580 volsize = intval;
581 break;
582 case 'p':
583 parents = B_TRUE;
584 break;
585 case 'b':
586 bflag = B_TRUE;
587 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
588 (void) fprintf(stderr, gettext("bad volume "
589 "block size '%s': %s\n"), optarg,
590 libzfs_error_description(g_zfs));
591 goto error;
592 }
593
594 if (nvlist_add_uint64(props,
595 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
596 intval) != 0) {
597 (void) fprintf(stderr, gettext("internal "
598 "error: out of memory\n"));
599 goto error;
600 }
601 break;
602 case 'o':
b128c09f 603 if (parseprop(props))
34dc7c2f 604 goto error;
34dc7c2f
BB		 605 break;
606 case 's':
607 noreserve = B_TRUE;
608 break;
609 case ':':
610 (void) fprintf(stderr, gettext("missing size "
611 "argument\n"));
612 goto badusage;
613 break;
614 case '?':
615 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
616 optopt);
617 goto badusage;
618 }
619 }
620
621 if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
622 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
623 "used when creating a volume\n"));
624 goto badusage;
625 }
626
627 argc -= optind;
628 argv += optind;
629
630 /* check number of arguments */
631 if (argc == 0) {
632 (void) fprintf(stderr, gettext("missing %s argument\n"),
633 zfs_type_to_name(type));
634 goto badusage;
635 }
636 if (argc > 1) {
637 (void) fprintf(stderr, gettext("too many arguments\n"));
638 goto badusage;
639 }
640
641 if (type == ZFS_TYPE_VOLUME && !noreserve) {
642 zpool_handle_t *zpool_handle;
643 uint64_t spa_version;
644 char *p;
645 zfs_prop_t resv_prop;
b128c09f 646 char *strval;
34dc7c2f
BB		 647
648 if (p = strchr(argv[0], '/'))
649 *p = '\0';
650 zpool_handle = zpool_open(g_zfs, argv[0]);
651 if (p != NULL)
652 *p = '/';
653 if (zpool_handle == NULL)
654 goto error;
655 spa_version = zpool_get_prop_int(zpool_handle,
656 ZPOOL_PROP_VERSION, NULL);
657 zpool_close(zpool_handle);
658 if (spa_version >= SPA_VERSION_REFRESERVATION)
659 resv_prop = ZFS_PROP_REFRESERVATION;
660 else
661 resv_prop = ZFS_PROP_RESERVATION;
662
663 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
664 &strval) != 0) {
665 if (nvlist_add_uint64(props,
666 zfs_prop_to_name(resv_prop), volsize) != 0) {
667 (void) fprintf(stderr, gettext("internal "
668 "error: out of memory\n"));
669 nvlist_free(props);
670 return (1);
671 }
672 }
673 }
674
675 if (parents && zfs_name_valid(argv[0], type)) {
676 /*
677 * Now create the ancestors of target dataset. If the target
678 * already exists and '-p' option was used we should not
679 * complain.
680 */
681 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
682 ret = 0;
683 goto error;
684 }
685 if (zfs_create_ancestors(g_zfs, argv[0]) != 0)
686 goto error;
687 }
688
689 /* pass to libzfs */
690 if (zfs_create(g_zfs, argv[0], type, props) != 0)
691 goto error;
692
693 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
694 goto error;
695 /*
696 * if the user doesn't want the dataset automatically mounted,
697 * then skip the mount/share step
698 */
699
700 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
701
702 /*
703 * Mount and/or share the new filesystem as appropriate. We provide a
704 * verbose error message to let the user know that their filesystem was
705 * in fact created, even if we failed to mount or share it.
706 */
707 ret = 0;
708 if (canmount == ZFS_CANMOUNT_ON) {
709 if (zfs_mount(zhp, NULL, 0) != 0) {
710 (void) fprintf(stderr, gettext("filesystem "
711 "successfully created, but not mounted\n"));
712 ret = 1;
713 } else if (zfs_share(zhp) != 0) {
714 (void) fprintf(stderr, gettext("filesystem "
715 "successfully created, but not shared\n"));
716 ret = 1;
717 }
718 }
719
720error:
721 if (zhp)
722 zfs_close(zhp);
723 nvlist_free(props);
724 return (ret);
725badusage:
726 nvlist_free(props);
727 usage(B_FALSE);
728 return (2);
729}
730
731/*
732 * zfs destroy [-rf] <fs, snap, vol>
733 *
734 * -r Recursively destroy all children
735 * -R Recursively destroy all dependents, including clones
736 * -f Force unmounting of any dependents
737 *
738 * Destroys the given dataset. By default, it will unmount any filesystems,
739 * and refuse to destroy a dataset that has any dependents. A dependent can
740 * either be a child, or a clone of a child.
741 */
742typedef struct destroy_cbdata {
743 boolean_t cb_first;
744 int cb_force;
745 int cb_recurse;
746 int cb_error;
747 int cb_needforce;
748 int cb_doclones;
749 boolean_t cb_closezhp;
750 zfs_handle_t *cb_target;
751 char *cb_snapname;
752} destroy_cbdata_t;
753
754/*
755 * Check for any dependents based on the '-r' or '-R' flags.
756 */
757static int
758destroy_check_dependent(zfs_handle_t *zhp, void *data)
759{
760 destroy_cbdata_t *cbp = data;
761 const char *tname = zfs_get_name(cbp->cb_target);
762 const char *name = zfs_get_name(zhp);
763
764 if (strncmp(tname, name, strlen(tname)) == 0 &&
765 (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
766 /*
767 * This is a direct descendant, not a clone somewhere else in
768 * the hierarchy.
769 */
770 if (cbp->cb_recurse)
771 goto out;
772
773 if (cbp->cb_first) {
774 (void) fprintf(stderr, gettext("cannot destroy '%s': "
775 "%s has children\n"),
776 zfs_get_name(cbp->cb_target),
777 zfs_type_to_name(zfs_get_type(cbp->cb_target)));
778 (void) fprintf(stderr, gettext("use '-r' to destroy "
779 "the following datasets:\n"));
780 cbp->cb_first = B_FALSE;
781 cbp->cb_error = 1;
782 }
783
784 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
785 } else {
786 /*
787 * This is a clone. We only want to report this if the '-r'
788 * wasn't specified, or the target is a snapshot.
789 */
790 if (!cbp->cb_recurse &&
791 zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
792 goto out;
793
794 if (cbp->cb_first) {
795 (void) fprintf(stderr, gettext("cannot destroy '%s': "
796 "%s has dependent clones\n"),
797 zfs_get_name(cbp->cb_target),
798 zfs_type_to_name(zfs_get_type(cbp->cb_target)));
799 (void) fprintf(stderr, gettext("use '-R' to destroy "
800 "the following datasets:\n"));
801 cbp->cb_first = B_FALSE;
802 cbp->cb_error = 1;
803 }
804
805 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
806 }
807
808out:
809 zfs_close(zhp);
810 return (0);
811}
812
813static int
814destroy_callback(zfs_handle_t *zhp, void *data)
815{
816 destroy_cbdata_t *cbp = data;
817
818 /*
819 * Ignore pools (which we've already flagged as an error before getting
820 * here.
821 */
822 if (strchr(zfs_get_name(zhp), '/') == NULL &&
823 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
824 zfs_close(zhp);
825 return (0);
826 }
827
828 /*
829 * Bail out on the first error.
830 */
831 if (zfs_unmount(zhp, NULL, cbp->cb_force ? MS_FORCE : 0) != 0 ||
832 zfs_destroy(zhp) != 0) {
833 zfs_close(zhp);
834 return (-1);
835 }
836
837 zfs_close(zhp);
838 return (0);
839}
840
841static int
842destroy_snap_clones(zfs_handle_t *zhp, void *arg)
843{
844 destroy_cbdata_t *cbp = arg;
845 char thissnap[MAXPATHLEN];
846 zfs_handle_t *szhp;
847 boolean_t closezhp = cbp->cb_closezhp;
848 int rv;
849
850 (void) snprintf(thissnap, sizeof (thissnap),
851 "%s@%s", zfs_get_name(zhp), cbp->cb_snapname);
852
853 libzfs_print_on_error(g_zfs, B_FALSE);
854 szhp = zfs_open(g_zfs, thissnap, ZFS_TYPE_SNAPSHOT);
855 libzfs_print_on_error(g_zfs, B_TRUE);
856 if (szhp) {
857 /*
858 * Destroy any clones of this snapshot
859 */
860 if (zfs_iter_dependents(szhp, B_FALSE, destroy_callback,
861 cbp) != 0) {
862 zfs_close(szhp);
863 if (closezhp)
864 zfs_close(zhp);
865 return (-1);
866 }
867 zfs_close(szhp);
868 }
869
870 cbp->cb_closezhp = B_TRUE;
871 rv = zfs_iter_filesystems(zhp, destroy_snap_clones, arg);
872 if (closezhp)
873 zfs_close(zhp);
874 return (rv);
875}
876
877static int
878zfs_do_destroy(int argc, char **argv)
879{
880 destroy_cbdata_t cb = { 0 };
881 int c;
882 zfs_handle_t *zhp;
883 char *cp;
884
885 /* check options */
886 while ((c = getopt(argc, argv, "frR")) != -1) {
887 switch (c) {
888 case 'f':
889 cb.cb_force = 1;
890 break;
891 case 'r':
892 cb.cb_recurse = 1;
893 break;
894 case 'R':
895 cb.cb_recurse = 1;
896 cb.cb_doclones = 1;
897 break;
898 case '?':
899 default:
900 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
901 optopt);
902 usage(B_FALSE);
903 }
904 }
905
906 argc -= optind;
907 argv += optind;
908
909 /* check number of arguments */
910 if (argc == 0) {
911 (void) fprintf(stderr, gettext("missing path argument\n"));
912 usage(B_FALSE);
913 }
914 if (argc > 1) {
915 (void) fprintf(stderr, gettext("too many arguments\n"));
916 usage(B_FALSE);
917 }
918
919 /*
920 * If we are doing recursive destroy of a snapshot, then the
921 * named snapshot may not exist. Go straight to libzfs.
922 */
923 if (cb.cb_recurse && (cp = strchr(argv[0], '@'))) {
924 int ret;
925
926 *cp = '\0';
927 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
928 return (1);
929 *cp = '@';
930 cp++;
931
932 if (cb.cb_doclones) {
933 cb.cb_snapname = cp;
934 if (destroy_snap_clones(zhp, &cb) != 0) {
935 zfs_close(zhp);
936 return (1);
937 }
938 }
939
940 ret = zfs_destroy_snaps(zhp, cp);
941 zfs_close(zhp);
942 if (ret) {
943 (void) fprintf(stderr,
944 gettext("no snapshots destroyed\n"));
945 }
946 return (ret != 0);
947 }
948
949
950 /* Open the given dataset */
951 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
952 return (1);
953
954 cb.cb_target = zhp;
955
956 /*
957 * Perform an explicit check for pools before going any further.
958 */
959 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
960 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
961 (void) fprintf(stderr, gettext("cannot destroy '%s': "
962 "operation does not apply to pools\n"),
963 zfs_get_name(zhp));
964 (void) fprintf(stderr, gettext("use 'zfs destroy -r "
965 "%s' to destroy all datasets in the pool\n"),
966 zfs_get_name(zhp));
967 (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
968 "to destroy the pool itself\n"), zfs_get_name(zhp));
969 zfs_close(zhp);
970 return (1);
971 }
972
973 /*
974 * Check for any dependents and/or clones.
975 */
976 cb.cb_first = B_TRUE;
977 if (!cb.cb_doclones &&
978 zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
979 &cb) != 0) {
980 zfs_close(zhp);
981 return (1);
982 }
983
984 if (cb.cb_error ||
985 zfs_iter_dependents(zhp, B_FALSE, destroy_callback, &cb) != 0) {
986 zfs_close(zhp);
987 return (1);
988 }
989
990 /*
991 * Do the real thing. The callback will close the handle regardless of
992 * whether it succeeds or not.
993 */
994
995 if (destroy_callback(zhp, &cb) != 0)
996 return (1);
997
998
999 return (0);
1000}
1001
1002/*
1003 * zfs get [-rHp] [-o field[,field]...] [-s source[,source]...]
1004 * < all | property[,property]... > < fs | snap | vol > ...
1005 *
1006 * -r recurse over any child datasets
1007 * -H scripted mode. Headers are stripped, and fields are separated
1008 * by tabs instead of spaces.
1009 * -o Set of fields to display. One of "name,property,value,source".
1010 * Default is all four.
1011 * -s Set of sources to allow. One of
1012 * "local,default,inherited,temporary,none". Default is all
1013 * five.
1014 * -p Display values in parsable (literal) format.
1015 *
1016 * Prints properties for the given datasets. The user can control which
1017 * columns to display as well as which property types to allow.
1018 */
1019
1020/*
1021 * Invoked to display the properties for a single dataset.
1022 */
1023static int
1024get_callback(zfs_handle_t *zhp, void *data)
1025{
1026 char buf[ZFS_MAXPROPLEN];
1027 zprop_source_t sourcetype;
1028 char source[ZFS_MAXNAMELEN];
1029 zprop_get_cbdata_t *cbp = data;
1030 nvlist_t *userprop = zfs_get_user_props(zhp);
1031 zprop_list_t *pl = cbp->cb_proplist;
1032 nvlist_t *propval;
1033 char *strval;
1034 char *sourceval;
1035
1036 for (; pl != NULL; pl = pl->pl_next) {
1037 /*
1038 * Skip the special fake placeholder. This will also skip over
1039 * the name property when 'all' is specified.
1040 */
1041 if (pl->pl_prop == ZFS_PROP_NAME &&
1042 pl == cbp->cb_proplist)
1043 continue;
1044
1045 if (pl->pl_prop != ZPROP_INVAL) {
1046 if (zfs_prop_get(zhp, pl->pl_prop, buf,
1047 sizeof (buf), &sourcetype, source,
1048 sizeof (source),
1049 cbp->cb_literal) != 0) {
1050 if (pl->pl_all)
1051 continue;
1052 if (!zfs_prop_valid_for_type(pl->pl_prop,
1053 ZFS_TYPE_DATASET)) {
1054 (void) fprintf(stderr,
1055 gettext("No such property '%s'\n"),
1056 zfs_prop_to_name(pl->pl_prop));
1057 continue;
1058 }
1059 sourcetype = ZPROP_SRC_NONE;
1060 (void) strlcpy(buf, "-", sizeof (buf));
1061 }
1062
1063 zprop_print_one_property(zfs_get_name(zhp), cbp,
1064 zfs_prop_to_name(pl->pl_prop),
1065 buf, sourcetype, source);
1066 } else {
1067 if (nvlist_lookup_nvlist(userprop,
1068 pl->pl_user_prop, &propval) != 0) {
1069 if (pl->pl_all)
1070 continue;
1071 sourcetype = ZPROP_SRC_NONE;
1072 strval = "-";
1073 } else {
1074 verify(nvlist_lookup_string(propval,
1075 ZPROP_VALUE, &strval) == 0);
1076 verify(nvlist_lookup_string(propval,
1077 ZPROP_SOURCE, &sourceval) == 0);
1078
1079 if (strcmp(sourceval,
1080 zfs_get_name(zhp)) == 0) {
1081 sourcetype = ZPROP_SRC_LOCAL;
1082 } else {
1083 sourcetype = ZPROP_SRC_INHERITED;
1084 (void) strlcpy(source,
1085 sourceval, sizeof (source));
1086 }
1087 }
1088
1089 zprop_print_one_property(zfs_get_name(zhp), cbp,
1090 pl->pl_user_prop, strval, sourcetype,
1091 source);
1092 }
1093 }
1094
1095 return (0);
1096}
1097
1098static int
1099zfs_do_get(int argc, char **argv)
1100{
1101 zprop_get_cbdata_t cb = { 0 };
b128c09f 1102 int i, c, flags = 0;
34dc7c2f
BB		 1103 char *value, *fields;
1104 int ret;
1105 zprop_list_t fake_name = { 0 };
1106
1107 /*
1108 * Set up default columns and sources.
1109 */
1110 cb.cb_sources = ZPROP_SRC_ALL;
1111 cb.cb_columns[0] = GET_COL_NAME;
1112 cb.cb_columns[1] = GET_COL_PROPERTY;
1113 cb.cb_columns[2] = GET_COL_VALUE;
1114 cb.cb_columns[3] = GET_COL_SOURCE;
1115 cb.cb_type = ZFS_TYPE_DATASET;
1116
1117 /* check options */
1118 while ((c = getopt(argc, argv, ":o:s:rHp")) != -1) {
1119 switch (c) {
1120 case 'p':
1121 cb.cb_literal = B_TRUE;
1122 break;
1123 case 'r':
b128c09f 1124 flags |= ZFS_ITER_RECURSE;
34dc7c2f
BB		 1125 break;
1126 case 'H':
1127 cb.cb_scripted = B_TRUE;
1128 break;
1129 case ':':
1130 (void) fprintf(stderr, gettext("missing argument for "
1131 "'%c' option\n"), optopt);
1132 usage(B_FALSE);
1133 break;
1134 case 'o':
1135 /*
1136 * Process the set of columns to display. We zero out
1137 * the structure to give us a blank slate.
1138 */
1139 bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1140 i = 0;
1141 while (*optarg != '\0') {
1142 static char *col_subopts[] =
1143 { "name", "property", "value", "source",
1144 NULL };
1145
1146 if (i == 4) {
1147 (void) fprintf(stderr, gettext("too "
1148 "many fields given to -o "
1149 "option\n"));
1150 usage(B_FALSE);
1151 }
1152
1153 switch (getsubopt(&optarg, col_subopts,
1154 &value)) {
1155 case 0:
1156 cb.cb_columns[i++] = GET_COL_NAME;
1157 break;
1158 case 1:
1159 cb.cb_columns[i++] = GET_COL_PROPERTY;
1160 break;
1161 case 2:
1162 cb.cb_columns[i++] = GET_COL_VALUE;
1163 break;
1164 case 3:
1165 cb.cb_columns[i++] = GET_COL_SOURCE;
1166 break;
1167 default:
1168 (void) fprintf(stderr,
1169 gettext("invalid column name "
1170 "'%s'\n"), value);
1171 usage(B_FALSE);
1172 }
1173 }
1174 break;
1175
1176 case 's':
1177 cb.cb_sources = 0;
1178 while (*optarg != '\0') {
1179 static char *source_subopts[] = {
1180 "local", "default", "inherited",
1181 "temporary", "none", NULL };
1182
1183 switch (getsubopt(&optarg, source_subopts,
1184 &value)) {
1185 case 0:
1186 cb.cb_sources |= ZPROP_SRC_LOCAL;
1187 break;
1188 case 1:
1189 cb.cb_sources |= ZPROP_SRC_DEFAULT;
1190 break;
1191 case 2:
1192 cb.cb_sources |= ZPROP_SRC_INHERITED;
1193 break;
1194 case 3:
1195 cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1196 break;
1197 case 4:
1198 cb.cb_sources |= ZPROP_SRC_NONE;
1199 break;
1200 default:
1201 (void) fprintf(stderr,
1202 gettext("invalid source "
1203 "'%s'\n"), value);
1204 usage(B_FALSE);
1205 }
1206 }
1207 break;
1208
1209 case '?':
1210 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1211 optopt);
1212 usage(B_FALSE);
1213 }
1214 }
1215
1216 argc -= optind;
1217 argv += optind;
1218
1219 if (argc < 1) {
1220 (void) fprintf(stderr, gettext("missing property "
1221 "argument\n"));
1222 usage(B_FALSE);
1223 }
1224
1225 fields = argv[0];
1226
1227 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1228 != 0)
1229 usage(B_FALSE);
1230
1231 argc--;
1232 argv++;
1233
1234 /*
1235 * As part of zfs_expand_proplist(), we keep track of the maximum column
1236 * width for each property. For the 'NAME' (and 'SOURCE') columns, we
1237 * need to know the maximum name length. However, the user likely did
1238 * not specify 'name' as one of the properties to fetch, so we need to
1239 * make sure we always include at least this property for
1240 * print_get_headers() to work properly.
1241 */
1242 if (cb.cb_proplist != NULL) {
1243 fake_name.pl_prop = ZFS_PROP_NAME;
1244 fake_name.pl_width = strlen(gettext("NAME"));
1245 fake_name.pl_next = cb.cb_proplist;
1246 cb.cb_proplist = &fake_name;
1247 }
1248
1249 cb.cb_first = B_TRUE;
1250
1251 /* run for each object */
b128c09f
BB		 1252 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, NULL,
1253 &cb.cb_proplist, get_callback, &cb);
34dc7c2f
BB		 1254
1255 if (cb.cb_proplist == &fake_name)
1256 zprop_free_list(fake_name.pl_next);
1257 else
1258 zprop_free_list(cb.cb_proplist);
1259
1260 return (ret);
1261}
1262
1263/*
1264 * inherit [-r] <property> <fs|vol> ...
1265 *
1266 * -r Recurse over all children
1267 *
1268 * For each dataset specified on the command line, inherit the given property
1269 * from its parent. Inheriting a property at the pool level will cause it to
1270 * use the default value. The '-r' flag will recurse over all children, and is
1271 * useful for setting a property on a hierarchy-wide basis, regardless of any
1272 * local modifications for each dataset.
1273 */
1274
1275static int
b128c09f 1276inherit_recurse_cb(zfs_handle_t *zhp, void *data)
34dc7c2f
BB		 1277{
1278 char *propname = data;
b128c09f 1279 zfs_prop_t prop = zfs_name_to_prop(propname);
34dc7c2f 1280
b128c09f
BB		 1281 /*
1282 * If we're doing it recursively, then ignore properties that
1283 * are not valid for this type of dataset.
1284 */
1285 if (prop != ZPROP_INVAL &&
1286 !zfs_prop_valid_for_type(prop, zfs_get_type(zhp)))
1287 return (0);
1288
1289 return (zfs_prop_inherit(zhp, propname) != 0);
1290}
1291
1292static int
1293inherit_cb(zfs_handle_t *zhp, void *data)
1294{
1295 char *propname = data;
1296
1297 return (zfs_prop_inherit(zhp, propname) != 0);
34dc7c2f
BB		 1298}
1299
1300static int
1301zfs_do_inherit(int argc, char **argv)
1302{
34dc7c2f
BB		 1303 int c;
1304 zfs_prop_t prop;
1305 char *propname;
1306 int ret;
b128c09f 1307 int flags = 0;
34dc7c2f
BB		 1308
1309 /* check options */
1310 while ((c = getopt(argc, argv, "r")) != -1) {
1311 switch (c) {
1312 case 'r':
b128c09f 1313 flags |= ZFS_ITER_RECURSE;
34dc7c2f
BB		 1314 break;
1315 case '?':
1316 default:
1317 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1318 optopt);
1319 usage(B_FALSE);
1320 }
1321 }
1322
1323 argc -= optind;
1324 argv += optind;
1325
1326 /* check number of arguments */
1327 if (argc < 1) {
1328 (void) fprintf(stderr, gettext("missing property argument\n"));
1329 usage(B_FALSE);
1330 }
1331 if (argc < 2) {
1332 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1333 usage(B_FALSE);
1334 }
1335
1336 propname = argv[0];
1337 argc--;
1338 argv++;
1339
1340 if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
1341 if (zfs_prop_readonly(prop)) {
1342 (void) fprintf(stderr, gettext(
1343 "%s property is read-only\n"),
1344 propname);
1345 return (1);
1346 }
1347 if (!zfs_prop_inheritable(prop)) {
1348 (void) fprintf(stderr, gettext("'%s' property cannot "
1349 "be inherited\n"), propname);
1350 if (prop == ZFS_PROP_QUOTA ||
1351 prop == ZFS_PROP_RESERVATION ||
1352 prop == ZFS_PROP_REFQUOTA ||
1353 prop == ZFS_PROP_REFRESERVATION)
1354 (void) fprintf(stderr, gettext("use 'zfs set "
1355 "%s=none' to clear\n"), propname);
1356 return (1);
1357 }
1358 } else if (!zfs_prop_user(propname)) {
1359 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
1360 propname);
1361 usage(B_FALSE);
1362 }
1363
b128c09f
BB		 1364 if (flags & ZFS_ITER_RECURSE) {
1365 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1366 NULL, NULL, inherit_recurse_cb, propname);
1367 } else {
1368 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1369 NULL, NULL, inherit_cb, propname);
1370 }
34dc7c2f
BB		 1371
1372 return (ret);
1373}
1374
1375typedef struct upgrade_cbdata {
1376 uint64_t cb_numupgraded;
1377 uint64_t cb_numsamegraded;
1378 uint64_t cb_numfailed;
1379 uint64_t cb_version;
1380 boolean_t cb_newer;
1381 boolean_t cb_foundone;
1382 char cb_lastfs[ZFS_MAXNAMELEN];
1383} upgrade_cbdata_t;
1384
1385static int
1386same_pool(zfs_handle_t *zhp, const char *name)
1387{
1388 int len1 = strcspn(name, "/@");
1389 const char *zhname = zfs_get_name(zhp);
1390 int len2 = strcspn(zhname, "/@");
1391
1392 if (len1 != len2)
1393 return (B_FALSE);
1394 return (strncmp(name, zhname, len1) == 0);
1395}
1396
1397static int
1398upgrade_list_callback(zfs_handle_t *zhp, void *data)
1399{
1400 upgrade_cbdata_t *cb = data;
1401 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1402
1403 /* list if it's old/new */
1404 if ((!cb->cb_newer && version < ZPL_VERSION) ||
1405 (cb->cb_newer && version > ZPL_VERSION)) {
1406 char *str;
1407 if (cb->cb_newer) {
1408 str = gettext("The following filesystems are "
1409 "formatted using a newer software version and\n"
1410 "cannot be accessed on the current system.\n\n");
1411 } else {
1412 str = gettext("The following filesystems are "
1413 "out of date, and can be upgraded. After being\n"
1414 "upgraded, these filesystems (and any 'zfs send' "
1415 "streams generated from\n"
1416 "subsequent snapshots) will no longer be "
1417 "accessible by older software versions.\n\n");
1418 }
1419
1420 if (!cb->cb_foundone) {
1421 (void) puts(str);
1422 (void) printf(gettext("VER FILESYSTEM\n"));
1423 (void) printf(gettext("--- ------------\n"));
1424 cb->cb_foundone = B_TRUE;
1425 }
1426
1427 (void) printf("%2u %s\n", version, zfs_get_name(zhp));
1428 }
1429
1430 return (0);
1431}
1432
1433static int
1434upgrade_set_callback(zfs_handle_t *zhp, void *data)
1435{
1436 upgrade_cbdata_t *cb = data;
1437 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1438
1439 if (cb->cb_version >= ZPL_VERSION_FUID) {
1440 int spa_version;
1441
1442 if (zfs_spa_version(zhp, &spa_version) < 0)
1443 return (-1);
1444
1445 if (spa_version < SPA_VERSION_FUID) {
1446 /* can't upgrade */
1447 (void) printf(gettext("%s: can not be upgraded; "
1448 "the pool version needs to first be upgraded\nto "
1449 "version %d\n\n"),
1450 zfs_get_name(zhp), SPA_VERSION_FUID);
1451 cb->cb_numfailed++;
1452 return (0);
1453 }
1454 }
1455
1456 /* upgrade */
1457 if (version < cb->cb_version) {
1458 char verstr[16];
1459 (void) snprintf(verstr, sizeof (verstr),
1460 "%llu", cb->cb_version);
1461 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
1462 /*
1463 * If they did "zfs upgrade -a", then we could
1464 * be doing ioctls to different pools. We need
1465 * to log this history once to each pool.
1466 */
1467 verify(zpool_stage_history(g_zfs, history_str) == 0);
1468 }
1469 if (zfs_prop_set(zhp, "version", verstr) == 0)
1470 cb->cb_numupgraded++;
1471 else
1472 cb->cb_numfailed++;
1473 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
1474 } else if (version > cb->cb_version) {
1475 /* can't downgrade */
1476 (void) printf(gettext("%s: can not be downgraded; "
1477 "it is already at version %u\n"),
1478 zfs_get_name(zhp), version);
1479 cb->cb_numfailed++;
1480 } else {
1481 cb->cb_numsamegraded++;
1482 }
1483 return (0);
1484}
1485
1486/*
1487 * zfs upgrade
1488 * zfs upgrade -v
1489 * zfs upgrade [-r] [-V <version>] <-a | filesystem>
1490 */
1491static int
1492zfs_do_upgrade(int argc, char **argv)
1493{
34dc7c2f
BB		 1494 boolean_t all = B_FALSE;
1495 boolean_t showversions = B_FALSE;
1496 int ret;
1497 upgrade_cbdata_t cb = { 0 };
1498 char c;
b128c09f 1499 int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
34dc7c2f
BB		 1500
1501 /* check options */
1502 while ((c = getopt(argc, argv, "rvV:a")) != -1) {
1503 switch (c) {
1504 case 'r':
b128c09f 1505 flags |= ZFS_ITER_RECURSE;
34dc7c2f
BB		 1506 break;
1507 case 'v':
1508 showversions = B_TRUE;
1509 break;
1510 case 'V':
1511 if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
1512 optarg, &cb.cb_version) != 0) {
1513 (void) fprintf(stderr,
1514 gettext("invalid version %s\n"), optarg);
1515 usage(B_FALSE);
1516 }
1517 break;
1518 case 'a':
1519 all = B_TRUE;
1520 break;
1521 case '?':
1522 default:
1523 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1524 optopt);
1525 usage(B_FALSE);
1526 }
1527 }
1528
1529 argc -= optind;
1530 argv += optind;
1531
b128c09f 1532 if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
34dc7c2f 1533 usage(B_FALSE);
b128c09f
BB		 1534 if (showversions && (flags & ZFS_ITER_RECURSE || all ||
1535 cb.cb_version || argc))
34dc7c2f
BB		 1536 usage(B_FALSE);
1537 if ((all || argc) && (showversions))
1538 usage(B_FALSE);
1539 if (all && argc)
1540 usage(B_FALSE);
1541
1542 if (showversions) {
1543 /* Show info on available versions. */
1544 (void) printf(gettext("The following filesystem versions are "
1545 "supported:\n\n"));
1546 (void) printf(gettext("VER DESCRIPTION\n"));
1547 (void) printf("--- -----------------------------------------"
1548 "---------------\n");
1549 (void) printf(gettext(" 1 Initial ZFS filesystem version\n"));
1550 (void) printf(gettext(" 2 Enhanced directory entries\n"));
1551 (void) printf(gettext(" 3 Case insensitive and File system "
1552 "unique identifer (FUID)\n"));
1553 (void) printf(gettext("\nFor more information on a particular "
1554 "version, including supported releases, see:\n\n"));
1555 (void) printf("http://www.opensolaris.org/os/community/zfs/"
1556 "version/zpl/N\n\n");
1557 (void) printf(gettext("Where 'N' is the version number.\n"));
1558 ret = 0;
1559 } else if (argc || all) {
1560 /* Upgrade filesystems */
1561 if (cb.cb_version == 0)
1562 cb.cb_version = ZPL_VERSION;
b128c09f
BB		 1563 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
1564 NULL, NULL, upgrade_set_callback, &cb);
34dc7c2f
BB		 1565 (void) printf(gettext("%llu filesystems upgraded\n"),
1566 cb.cb_numupgraded);
1567 if (cb.cb_numsamegraded) {
1568 (void) printf(gettext("%llu filesystems already at "
1569 "this version\n"),
1570 cb.cb_numsamegraded);
1571 }
1572 if (cb.cb_numfailed != 0)
1573 ret = 1;
1574 } else {
1575 /* List old-version filesytems */
1576 boolean_t found;
1577 (void) printf(gettext("This system is currently running "
1578 "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
1579
b128c09f
BB		 1580 flags |= ZFS_ITER_RECURSE;
1581 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
1582 NULL, NULL, upgrade_list_callback, &cb);
34dc7c2f
BB		 1583
1584 found = cb.cb_foundone;
1585 cb.cb_foundone = B_FALSE;
1586 cb.cb_newer = B_TRUE;
1587
b128c09f
BB		 1588 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
1589 NULL, NULL, upgrade_list_callback, &cb);
34dc7c2f
BB		 1590
1591 if (!cb.cb_foundone && !found) {
1592 (void) printf(gettext("All filesystems are "
1593 "formatted with the current version.\n"));
1594 }
1595 }
1596
1597 return (ret);
1598}
1599
1600/*
1601 * list [-rH] [-o property[,property]...] [-t type[,type]...]
1602 * [-s property [-s property]...] [-S property [-S property]...]
1603 * <dataset> ...
1604 *
1605 * -r Recurse over all children
1606 * -H Scripted mode; elide headers and separate columns by tabs
1607 * -o Control which fields to display.
1608 * -t Control which object types to display.
1609 * -s Specify sort columns, descending order.
1610 * -S Specify sort columns, ascending order.
1611 *
1612 * When given no arguments, lists all filesystems in the system.
1613 * Otherwise, list the specified datasets, optionally recursing down them if
1614 * '-r' is specified.
1615 */
1616typedef struct list_cbdata {
1617 boolean_t cb_first;
1618 boolean_t cb_scripted;
1619 zprop_list_t *cb_proplist;
1620} list_cbdata_t;
1621
1622/*
1623 * Given a list of columns to display, output appropriate headers for each one.
1624 */
1625static void
1626print_header(zprop_list_t *pl)
1627{
1628 char headerbuf[ZFS_MAXPROPLEN];
1629 const char *header;
1630 int i;
1631 boolean_t first = B_TRUE;
1632 boolean_t right_justify;
1633
1634 for (; pl != NULL; pl = pl->pl_next) {
1635 if (!first) {
1636 (void) printf(" ");
1637 } else {
1638 first = B_FALSE;
1639 }
1640
1641 right_justify = B_FALSE;
1642 if (pl->pl_prop != ZPROP_INVAL) {
1643 header = zfs_prop_column_name(pl->pl_prop);
1644 right_justify = zfs_prop_align_right(pl->pl_prop);
1645 } else {
1646 for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
1647 headerbuf[i] = toupper(pl->pl_user_prop[i]);
1648 headerbuf[i] = '\0';
1649 header = headerbuf;
1650 }
1651
1652 if (pl->pl_next == NULL && !right_justify)
1653 (void) printf("%s", header);
1654 else if (right_justify)
1655 (void) printf("%*s", pl->pl_width, header);
1656 else
1657 (void) printf("%-*s", pl->pl_width, header);
1658 }
1659
1660 (void) printf("\n");
1661}
1662
1663/*
1664 * Given a dataset and a list of fields, print out all the properties according
1665 * to the described layout.
1666 */
1667static void
1668print_dataset(zfs_handle_t *zhp, zprop_list_t *pl, boolean_t scripted)
1669{
1670 boolean_t first = B_TRUE;
1671 char property[ZFS_MAXPROPLEN];
1672 nvlist_t *userprops = zfs_get_user_props(zhp);
1673 nvlist_t *propval;
1674 char *propstr;
1675 boolean_t right_justify;
1676 int width;
1677
1678 for (; pl != NULL; pl = pl->pl_next) {
1679 if (!first) {
1680 if (scripted)
1681 (void) printf("\t");
1682 else
1683 (void) printf(" ");
1684 } else {
1685 first = B_FALSE;
1686 }
1687
1688 right_justify = B_FALSE;
1689 if (pl->pl_prop != ZPROP_INVAL) {
1690 if (zfs_prop_get(zhp, pl->pl_prop, property,
1691 sizeof (property), NULL, NULL, 0, B_FALSE) != 0)
1692 propstr = "-";
1693 else
1694 propstr = property;
1695
1696 right_justify = zfs_prop_align_right(pl->pl_prop);
1697 } else {
1698 if (nvlist_lookup_nvlist(userprops,
1699 pl->pl_user_prop, &propval) != 0)
1700 propstr = "-";
1701 else
1702 verify(nvlist_lookup_string(propval,
1703 ZPROP_VALUE, &propstr) == 0);
1704 }
1705
1706 width = pl->pl_width;
1707
1708 /*
1709 * If this is being called in scripted mode, or if this is the
1710 * last column and it is left-justified, don't include a width
1711 * format specifier.
1712 */
1713 if (scripted || (pl->pl_next == NULL && !right_justify))
1714 (void) printf("%s", propstr);
1715 else if (right_justify)
1716 (void) printf("%*s", width, propstr);
1717 else
1718 (void) printf("%-*s", width, propstr);
1719 }
1720
1721 (void) printf("\n");
1722}
1723
1724/*
1725 * Generic callback function to list a dataset or snapshot.
1726 */
1727static int
1728list_callback(zfs_handle_t *zhp, void *data)
1729{
1730 list_cbdata_t *cbp = data;
1731
1732 if (cbp->cb_first) {
1733 if (!cbp->cb_scripted)
1734 print_header(cbp->cb_proplist);
1735 cbp->cb_first = B_FALSE;
1736 }
1737
1738 print_dataset(zhp, cbp->cb_proplist, cbp->cb_scripted);
1739
1740 return (0);
1741}
1742
1743static int
1744zfs_do_list(int argc, char **argv)
1745{
1746 int c;
34dc7c2f
BB		 1747 boolean_t scripted = B_FALSE;
1748 static char default_fields[] =
1749 "name,used,available,referenced,mountpoint";
b128c09f
BB		 1750 int types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
1751 boolean_t types_specified = B_FALSE;
34dc7c2f 1752 char *fields = NULL;
34dc7c2f
BB		 1753 list_cbdata_t cb = { 0 };
1754 char *value;
1755 int ret;
34dc7c2f 1756 zfs_sort_column_t *sortcol = NULL;
b128c09f 1757 int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
34dc7c2f
BB		 1758
1759 /* check options */
1760 while ((c = getopt(argc, argv, ":o:rt:Hs:S:")) != -1) {
1761 switch (c) {
1762 case 'o':
1763 fields = optarg;
1764 break;
1765 case 'r':
b128c09f 1766 flags |= ZFS_ITER_RECURSE;
34dc7c2f
BB		 1767 break;
1768 case 'H':
1769 scripted = B_TRUE;
1770 break;
1771 case 's':
1772 if (zfs_add_sort_column(&sortcol, optarg,
1773 B_FALSE) != 0) {
1774 (void) fprintf(stderr,
1775 gettext("invalid property '%s'\n"), optarg);
1776 usage(B_FALSE);
1777 }
1778 break;
1779 case 'S':
1780 if (zfs_add_sort_column(&sortcol, optarg,
1781 B_TRUE) != 0) {
1782 (void) fprintf(stderr,
1783 gettext("invalid property '%s'\n"), optarg);
1784 usage(B_FALSE);
1785 }
1786 break;
1787 case 't':
1788 types = 0;
b128c09f
BB		 1789 types_specified = B_TRUE;
1790 flags &= ~ZFS_ITER_PROP_LISTSNAPS;
34dc7c2f 1791 while (*optarg != '\0') {
b128c09f
BB		 1792 static char *type_subopts[] = { "filesystem",
1793 "volume", "snapshot", "all", NULL };
1794
34dc7c2f
BB		 1795 switch (getsubopt(&optarg, type_subopts,
1796 &value)) {
1797 case 0:
1798 types |= ZFS_TYPE_FILESYSTEM;
1799 break;
1800 case 1:
1801 types |= ZFS_TYPE_VOLUME;
1802 break;
1803 case 2:
1804 types |= ZFS_TYPE_SNAPSHOT;
1805 break;
b128c09f
BB		 1806 case 3:
1807 types = ZFS_TYPE_DATASET;
1808 break;
1809
34dc7c2f
BB		 1810 default:
1811 (void) fprintf(stderr,
1812 gettext("invalid type '%s'\n"),
1813 value);
1814 usage(B_FALSE);
1815 }
1816 }
1817 break;
1818 case ':':
1819 (void) fprintf(stderr, gettext("missing argument for "
1820 "'%c' option\n"), optopt);
1821 usage(B_FALSE);
1822 break;
1823 case '?':
1824 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1825 optopt);
1826 usage(B_FALSE);
1827 }
1828 }
1829
1830 argc -= optind;
1831 argv += optind;
1832
1833 if (fields == NULL)
b128c09f
BB		 1834 fields = default_fields;
1835
1836 /*
1837 * If "-o space" and no types were specified, don't display snapshots.
1838 */
1839 if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
1840 types &= ~ZFS_TYPE_SNAPSHOT;
34dc7c2f
BB		 1841
1842 /*
1843 * If the user specifies '-o all', the zprop_get_list() doesn't
1844 * normally include the name of the dataset. For 'zfs list', we always
1845 * want this property to be first.
1846 */
1847 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1848 != 0)
1849 usage(B_FALSE);
1850
1851 cb.cb_scripted = scripted;
1852 cb.cb_first = B_TRUE;
1853
b128c09f
BB		 1854 ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
1855 list_callback, &cb);
34dc7c2f
BB		 1856
1857 zprop_free_list(cb.cb_proplist);
1858 zfs_free_sort_columns(sortcol);
1859
1860 if (ret == 0 && cb.cb_first && !cb.cb_scripted)
1861 (void) printf(gettext("no datasets available\n"));
1862
1863 return (ret);
1864}
1865
1866/*
1867 * zfs rename <fs | snap | vol> <fs | snap | vol>
1868 * zfs rename -p <fs | vol> <fs | vol>
1869 * zfs rename -r <snap> <snap>
1870 *
1871 * Renames the given dataset to another of the same type.
1872 *
1873 * The '-p' flag creates all the non-existing ancestors of the target first.
1874 */
1875/* ARGSUSED */
1876static int
1877zfs_do_rename(int argc, char **argv)
1878{
1879 zfs_handle_t *zhp;
1880 int c;
1881 int ret;
1882 boolean_t recurse = B_FALSE;
1883 boolean_t parents = B_FALSE;
1884
1885 /* check options */
1886 while ((c = getopt(argc, argv, "pr")) != -1) {
1887 switch (c) {
1888 case 'p':
1889 parents = B_TRUE;
1890 break;
1891 case 'r':
1892 recurse = B_TRUE;
1893 break;
1894 case '?':
1895 default:
1896 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1897 optopt);
1898 usage(B_FALSE);
1899 }
1900 }
1901
1902 argc -= optind;
1903 argv += optind;
1904
1905 /* check number of arguments */
1906 if (argc < 1) {
1907 (void) fprintf(stderr, gettext("missing source dataset "
1908 "argument\n"));
1909 usage(B_FALSE);
1910 }
1911 if (argc < 2) {
1912 (void) fprintf(stderr, gettext("missing target dataset "
1913 "argument\n"));
1914 usage(B_FALSE);
1915 }
1916 if (argc > 2) {
1917 (void) fprintf(stderr, gettext("too many arguments\n"));
1918 usage(B_FALSE);
1919 }
1920
1921 if (recurse && parents) {
1922 (void) fprintf(stderr, gettext("-p and -r options are mutually "
1923 "exclusive\n"));
1924 usage(B_FALSE);
1925 }
1926
1927 if (recurse && strchr(argv[0], '@') == 0) {
1928 (void) fprintf(stderr, gettext("source dataset for recursive "
1929 "rename must be a snapshot\n"));
1930 usage(B_FALSE);
1931 }
1932
1933 if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM |
1934 ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL)
1935 return (1);
1936
1937 /* If we were asked and the name looks good, try to create ancestors. */
1938 if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
1939 zfs_create_ancestors(g_zfs, argv[1]) != 0) {
1940 zfs_close(zhp);
1941 return (1);
1942 }
1943
1944 ret = (zfs_rename(zhp, argv[1], recurse) != 0);
1945
1946 zfs_close(zhp);
1947 return (ret);
1948}
1949
1950/*
1951 * zfs promote <fs>
1952 *
1953 * Promotes the given clone fs to be the parent
1954 */
1955/* ARGSUSED */
1956static int
1957zfs_do_promote(int argc, char **argv)
1958{
1959 zfs_handle_t *zhp;
1960 int ret;
1961
1962 /* check options */
1963 if (argc > 1 && argv[1][0] == '-') {
1964 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1965 argv[1][1]);
1966 usage(B_FALSE);
1967 }
1968
1969 /* check number of arguments */
1970 if (argc < 2) {
1971 (void) fprintf(stderr, gettext("missing clone filesystem"
1972 " argument\n"));
1973 usage(B_FALSE);
1974 }
1975 if (argc > 2) {
1976 (void) fprintf(stderr, gettext("too many arguments\n"));
1977 usage(B_FALSE);
1978 }
1979
1980 zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
1981 if (zhp == NULL)
1982 return (1);
1983
1984 ret = (zfs_promote(zhp) != 0);
1985
1986
1987 zfs_close(zhp);
1988 return (ret);
1989}
1990
1991/*
1992 * zfs rollback [-rRf] <snapshot>
1993 *
1994 * -r Delete any intervening snapshots before doing rollback
1995 * -R Delete any snapshots and their clones
1996 * -f ignored for backwards compatability
1997 *
1998 * Given a filesystem, rollback to a specific snapshot, discarding any changes
1999 * since then and making it the active dataset. If more recent snapshots exist,
2000 * the command will complain unless the '-r' flag is given.
2001 */
2002typedef struct rollback_cbdata {
2003 uint64_t cb_create;
2004 boolean_t cb_first;
2005 int cb_doclones;
2006 char *cb_target;
2007 int cb_error;
2008 boolean_t cb_recurse;
2009 boolean_t cb_dependent;
2010} rollback_cbdata_t;
2011
2012/*
2013 * Report any snapshots more recent than the one specified. Used when '-r' is
2014 * not specified. We reuse this same callback for the snapshot dependents - if
2015 * 'cb_dependent' is set, then this is a dependent and we should report it
2016 * without checking the transaction group.
2017 */
2018static int
2019rollback_check(zfs_handle_t *zhp, void *data)
2020{
2021 rollback_cbdata_t *cbp = data;
2022
2023 if (cbp->cb_doclones) {
2024 zfs_close(zhp);
2025 return (0);
2026 }
2027
2028 if (!cbp->cb_dependent) {
2029 if (strcmp(zfs_get_name(zhp), cbp->cb_target) != 0 &&
2030 zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT &&
2031 zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) >
2032 cbp->cb_create) {
2033
2034 if (cbp->cb_first && !cbp->cb_recurse) {
2035 (void) fprintf(stderr, gettext("cannot "
2036 "rollback to '%s': more recent snapshots "
2037 "exist\n"),
2038 cbp->cb_target);
2039 (void) fprintf(stderr, gettext("use '-r' to "
2040 "force deletion of the following "
2041 "snapshots:\n"));
2042 cbp->cb_first = 0;
2043 cbp->cb_error = 1;
2044 }
2045
2046 if (cbp->cb_recurse) {
2047 cbp->cb_dependent = B_TRUE;
2048 if (zfs_iter_dependents(zhp, B_TRUE,
2049 rollback_check, cbp) != 0) {
2050 zfs_close(zhp);
2051 return (-1);
2052 }
2053 cbp->cb_dependent = B_FALSE;
2054 } else {
2055 (void) fprintf(stderr, "%s\n",
2056 zfs_get_name(zhp));
2057 }
2058 }
2059 } else {
2060 if (cbp->cb_first && cbp->cb_recurse) {
2061 (void) fprintf(stderr, gettext("cannot rollback to "
2062 "'%s': clones of previous snapshots exist\n"),
2063 cbp->cb_target);
2064 (void) fprintf(stderr, gettext("use '-R' to "
2065 "force deletion of the following clones and "
2066 "dependents:\n"));
2067 cbp->cb_first = 0;
2068 cbp->cb_error = 1;
2069 }
2070
2071 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
2072 }
2073
2074 zfs_close(zhp);
2075 return (0);
2076}
2077
2078static int
2079zfs_do_rollback(int argc, char **argv)
2080{
2081 int ret;
2082 int c;
2083 boolean_t force = B_FALSE;
2084 rollback_cbdata_t cb = { 0 };
2085 zfs_handle_t *zhp, *snap;
2086 char parentname[ZFS_MAXNAMELEN];
2087 char *delim;
2088
2089 /* check options */
2090 while ((c = getopt(argc, argv, "rRf")) != -1) {
2091 switch (c) {
2092 case 'r':
2093 cb.cb_recurse = 1;
2094 break;
2095 case 'R':
2096 cb.cb_recurse = 1;
2097 cb.cb_doclones = 1;
2098 break;
2099 case 'f':
2100 force = B_TRUE;
2101 break;
2102 case '?':
2103 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2104 optopt);
2105 usage(B_FALSE);
2106 }
2107 }
2108
2109 argc -= optind;
2110 argv += optind;
2111
2112 /* check number of arguments */
2113 if (argc < 1) {
2114 (void) fprintf(stderr, gettext("missing dataset argument\n"));
2115 usage(B_FALSE);
2116 }
2117 if (argc > 1) {
2118 (void) fprintf(stderr, gettext("too many arguments\n"));
2119 usage(B_FALSE);
2120 }
2121
2122 /* open the snapshot */
2123 if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
2124 return (1);
2125
2126 /* open the parent dataset */
2127 (void) strlcpy(parentname, argv[0], sizeof (parentname));
2128 verify((delim = strrchr(parentname, '@')) != NULL);
2129 *delim = '\0';
2130 if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
2131 zfs_close(snap);
2132 return (1);
2133 }
2134
2135 /*
2136 * Check for more recent snapshots and/or clones based on the presence
2137 * of '-r' and '-R'.
2138 */
2139 cb.cb_target = argv[0];
2140 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
2141 cb.cb_first = B_TRUE;
2142 cb.cb_error = 0;
2143 if ((ret = zfs_iter_children(zhp, rollback_check, &cb)) != 0)
2144 goto out;
2145
2146 if ((ret = cb.cb_error) != 0)
2147 goto out;
2148
2149 /*
2150 * Rollback parent to the given snapshot.
2151 */
2152 ret = zfs_rollback(zhp, snap, force);
2153
2154out:
2155 zfs_close(snap);
2156 zfs_close(zhp);
2157
2158 if (ret == 0)
2159 return (0);
2160 else
2161 return (1);
2162}
2163
2164/*
2165 * zfs set property=value { fs | snap | vol } ...
2166 *
2167 * Sets the given property for all datasets specified on the command line.
2168 */
2169typedef struct set_cbdata {
2170 char *cb_propname;
2171 char *cb_value;
2172} set_cbdata_t;
2173
2174static int
2175set_callback(zfs_handle_t *zhp, void *data)
2176{
2177 set_cbdata_t *cbp = data;
2178
2179 if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) {
2180 switch (libzfs_errno(g_zfs)) {
2181 case EZFS_MOUNTFAILED:
2182 (void) fprintf(stderr, gettext("property may be set "
2183 "but unable to remount filesystem\n"));
2184 break;
2185 case EZFS_SHARENFSFAILED:
2186 (void) fprintf(stderr, gettext("property may be set "
2187 "but unable to reshare filesystem\n"));
2188 break;
2189 }
2190 return (1);
2191 }
2192 return (0);
2193}
2194
2195static int
2196zfs_do_set(int argc, char **argv)
2197{
2198 set_cbdata_t cb;
2199 int ret;
2200
2201 /* check for options */
2202 if (argc > 1 && argv[1][0] == '-') {
2203 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2204 argv[1][1]);
2205 usage(B_FALSE);
2206 }
2207
2208 /* check number of arguments */
2209 if (argc < 2) {
2210 (void) fprintf(stderr, gettext("missing property=value "
2211 "argument\n"));
2212 usage(B_FALSE);
2213 }
2214 if (argc < 3) {
2215 (void) fprintf(stderr, gettext("missing dataset name\n"));
2216 usage(B_FALSE);
2217 }
2218
2219 /* validate property=value argument */
2220 cb.cb_propname = argv[1];
b128c09f
BB		 2221 if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) ||
2222 (cb.cb_value[1] == '\0')) {
34dc7c2f
BB		 2223 (void) fprintf(stderr, gettext("missing value in "
2224 "property=value argument\n"));
2225 usage(B_FALSE);
2226 }
2227
2228 *cb.cb_value = '\0';
2229 cb.cb_value++;
2230
2231 if (*cb.cb_propname == '\0') {
2232 (void) fprintf(stderr,
2233 gettext("missing property in property=value argument\n"));
2234 usage(B_FALSE);
2235 }
2236
b128c09f
BB		 2237 ret = zfs_for_each(argc - 2, argv + 2, NULL,
2238 ZFS_TYPE_DATASET, NULL, NULL, set_callback, &cb);
34dc7c2f
BB		 2239
2240 return (ret);
2241}
2242
2243/*
b128c09f 2244 * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
34dc7c2f
BB		 2245 *
2246 * Creates a snapshot with the given name. While functionally equivalent to
2247 * 'zfs create', it is a separate command to differentiate intent.
2248 */
2249static int
2250zfs_do_snapshot(int argc, char **argv)
2251{
2252 boolean_t recursive = B_FALSE;
2253 int ret;
2254 char c;
b128c09f
BB		 2255 nvlist_t *props;
2256
2257 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) {
2258 (void) fprintf(stderr, gettext("internal error: "
2259 "out of memory\n"));
2260 return (1);
2261 }
34dc7c2f
BB		 2262
2263 /* check options */
b128c09f 2264 while ((c = getopt(argc, argv, "ro:")) != -1) {
34dc7c2f 2265 switch (c) {
b128c09f
BB		 2266 case 'o':
2267 if (parseprop(props))
2268 return (1);
2269 break;
34dc7c2f
BB		 2270 case 'r':
2271 recursive = B_TRUE;
2272 break;
2273 case '?':
2274 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2275 optopt);
b128c09f 2276 goto usage;
34dc7c2f
BB		 2277 }
2278 }
2279
2280 argc -= optind;
2281 argv += optind;
2282
2283 /* check number of arguments */
2284 if (argc < 1) {
2285 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
b128c09f 2286 goto usage;
34dc7c2f
BB		 2287 }
2288 if (argc > 1) {
2289 (void) fprintf(stderr, gettext("too many arguments\n"));
b128c09f 2290 goto usage;
34dc7c2f
BB		 2291 }
2292
b128c09f
BB		 2293 ret = zfs_snapshot(g_zfs, argv[0], recursive, props);
2294 nvlist_free(props);
34dc7c2f
BB		 2295 if (ret && recursive)
2296 (void) fprintf(stderr, gettext("no snapshots were created\n"));
2297 return (ret != 0);
b128c09f
BB		 2298
2299usage:
2300 nvlist_free(props);
2301 usage(B_FALSE);
2302 return (-1);
34dc7c2f
BB		 2303}
2304
2305/*
2306 * zfs send [-v] -R [-i|-I <@snap>] <fs@snap>
2307 * zfs send [-v] [-i|-I <@snap>] <fs@snap>
2308 *
2309 * Send a backup stream to stdout.
2310 */
2311static int
2312zfs_do_send(int argc, char **argv)
2313{
2314 char *fromname = NULL;
2315 char *toname = NULL;
2316 char *cp;
2317 zfs_handle_t *zhp;
2318 boolean_t doall = B_FALSE;
2319 boolean_t replicate = B_FALSE;
2320 boolean_t fromorigin = B_FALSE;
2321 boolean_t verbose = B_FALSE;
2322 int c, err;
2323
2324 /* check options */
2325 while ((c = getopt(argc, argv, ":i:I:Rv")) != -1) {
2326 switch (c) {
2327 case 'i':
2328 if (fromname)
2329 usage(B_FALSE);
2330 fromname = optarg;
2331 break;
2332 case 'I':
2333 if (fromname)
2334 usage(B_FALSE);
2335 fromname = optarg;
2336 doall = B_TRUE;
2337 break;
2338 case 'R':
2339 replicate = B_TRUE;
2340 break;
2341 case 'v':
2342 verbose = B_TRUE;
2343 break;
2344 case ':':
2345 (void) fprintf(stderr, gettext("missing argument for "
2346 "'%c' option\n"), optopt);
2347 usage(B_FALSE);
2348 break;
2349 case '?':
2350 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2351 optopt);
2352 usage(B_FALSE);
2353 }
2354 }
2355
2356 argc -= optind;
2357 argv += optind;
2358
2359 /* check number of arguments */
2360 if (argc < 1) {
2361 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
2362 usage(B_FALSE);
2363 }
2364 if (argc > 1) {
2365 (void) fprintf(stderr, gettext("too many arguments\n"));
2366 usage(B_FALSE);
2367 }
2368
2369 if (isatty(STDOUT_FILENO)) {
2370 (void) fprintf(stderr,
2371 gettext("Error: Stream can not be written to a terminal.\n"
2372 "You must redirect standard output.\n"));
2373 return (1);
2374 }
2375
2376 cp = strchr(argv[0], '@');
2377 if (cp == NULL) {
2378 (void) fprintf(stderr,
2379 gettext("argument must be a snapshot\n"));
2380 usage(B_FALSE);
2381 }
2382 *cp = '\0';
2383 toname = cp + 1;
2384 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
2385 if (zhp == NULL)
2386 return (1);
2387
2388 /*
2389 * If they specified the full path to the snapshot, chop off
2390 * everything except the short name of the snapshot, but special
2391 * case if they specify the origin.
2392 */
2393 if (fromname && (cp = strchr(fromname, '@')) != NULL) {
2394 char origin[ZFS_MAXNAMELEN];
2395 zprop_source_t src;
2396
2397 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
2398 origin, sizeof (origin), &src, NULL, 0, B_FALSE);
2399
2400 if (strcmp(origin, fromname) == 0) {
2401 fromname = NULL;
2402 fromorigin = B_TRUE;
2403 } else {
2404 *cp = '\0';
2405 if (cp != fromname && strcmp(argv[0], fromname)) {
2406 (void) fprintf(stderr,
2407 gettext("incremental source must be "
2408 "in same filesystem\n"));
2409 usage(B_FALSE);
2410 }
2411 fromname = cp + 1;
2412 if (strchr(fromname, '@') || strchr(fromname, '/')) {
2413 (void) fprintf(stderr,
2414 gettext("invalid incremental source\n"));
2415 usage(B_FALSE);
2416 }
2417 }
2418 }
2419
2420 if (replicate && fromname == NULL)
2421 doall = B_TRUE;
2422
2423 err = zfs_send(zhp, fromname, toname, replicate, doall, fromorigin,
2424 verbose, STDOUT_FILENO);
2425 zfs_close(zhp);
2426
2427 return (err != 0);
2428}
2429
2430/*
2431 * zfs receive [-dnvF] <fs@snap>
2432 *
2433 * Restore a backup stream from stdin.
2434 */
2435static int
2436zfs_do_receive(int argc, char **argv)
2437{
2438 int c, err;
2439 recvflags_t flags;
2440
2441 bzero(&flags, sizeof (recvflags_t));
2442 /* check options */
2443 while ((c = getopt(argc, argv, ":dnvF")) != -1) {
2444 switch (c) {
2445 case 'd':
2446 flags.isprefix = B_TRUE;
2447 break;
2448 case 'n':
2449 flags.dryrun = B_TRUE;
2450 break;
2451 case 'v':
2452 flags.verbose = B_TRUE;
2453 break;
2454 case 'F':
2455 flags.force = B_TRUE;
2456 break;
2457 case ':':
2458 (void) fprintf(stderr, gettext("missing argument for "
2459 "'%c' option\n"), optopt);
2460 usage(B_FALSE);
2461 break;
2462 case '?':
2463 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2464 optopt);
2465 usage(B_FALSE);
2466 }
2467 }
2468
2469 argc -= optind;
2470 argv += optind;
2471
2472 /* check number of arguments */
2473 if (argc < 1) {
2474 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
2475 usage(B_FALSE);
2476 }
2477 if (argc > 1) {
2478 (void) fprintf(stderr, gettext("too many arguments\n"));
2479 usage(B_FALSE);
2480 }
2481
2482 if (isatty(STDIN_FILENO)) {
2483 (void) fprintf(stderr,
2484 gettext("Error: Backup stream can not be read "
2485 "from a terminal.\n"
2486 "You must redirect standard input.\n"));
2487 return (1);
2488 }
2489
2490 err = zfs_receive(g_zfs, argv[0], flags, STDIN_FILENO, NULL);
2491
2492 return (err != 0);
2493}
2494
2495typedef struct allow_cb {
2496 int a_permcnt;
2497 size_t a_treeoffset;
2498} allow_cb_t;
2499
2500static void
2501zfs_print_perms(avl_tree_t *tree)
2502{
2503 zfs_perm_node_t *permnode;
2504
2505 permnode = avl_first(tree);
2506 while (permnode != NULL) {
2507 (void) printf("%s", permnode->z_pname);
2508 permnode = AVL_NEXT(tree, permnode);
2509 if (permnode)
2510 (void) printf(",");
2511 else
2512 (void) printf("\n");
2513 }
2514}
2515
2516/*
2517 * Iterate over user/groups/everyone/... and the call perm_iter
2518 * function to print actual permission when tree has >0 nodes.
2519 */
2520static void
2521zfs_iter_perms(avl_tree_t *tree, const char *banner, allow_cb_t *cb)
2522{
2523 zfs_allow_node_t *item;
2524 avl_tree_t *ptree;
2525
2526 item = avl_first(tree);
2527 while (item) {
2528 ptree = (void *)((char *)item + cb->a_treeoffset);
2529 if (avl_numnodes(ptree)) {
2530 if (cb->a_permcnt++ == 0)
2531 (void) printf("%s\n", banner);
2532 (void) printf("\t%s", item->z_key);
2533 /*
2534 * Avoid an extra space being printed
2535 * for "everyone" which is keyed with a null
2536 * string
2537 */
2538 if (item->z_key[0] != '\0')
2539 (void) printf(" ");
2540 zfs_print_perms(ptree);
2541 }
2542 item = AVL_NEXT(tree, item);
2543 }
2544}
2545
2546#define LINES "-------------------------------------------------------------\n"
2547static int
2548zfs_print_allows(char *ds)
2549{
2550 zfs_allow_t *curperms, *perms;
2551 zfs_handle_t *zhp;
2552 allow_cb_t allowcb = { 0 };
2553 char banner[MAXPATHLEN];
2554
2555 if (ds[0] == '-')
2556 usage(B_FALSE);
2557
2558 if (strrchr(ds, '@')) {
2559 (void) fprintf(stderr, gettext("Snapshots don't have 'allow'"
2560 " permissions\n"));
2561 return (1);
2562 }
2563 if ((zhp = zfs_open(g_zfs, ds, ZFS_TYPE_DATASET)) == NULL)
2564 return (1);
2565
2566 if (zfs_perm_get(zhp, &perms)) {
2567 (void) fprintf(stderr,
2568 gettext("Failed to retrieve 'allows' on %s\n"), ds);
2569 zfs_close(zhp);
2570 return (1);
2571 }
2572
2573 zfs_close(zhp);
2574
2575 if (perms != NULL)
2576 (void) printf("%s", LINES);
2577 for (curperms = perms; curperms; curperms = curperms->z_next) {
2578
2579 (void) snprintf(banner, sizeof (banner),
fb5f0bc8 2580 gettext("Permission sets on (%s)"), curperms->z_setpoint);
34dc7c2f
BB		 2581 allowcb.a_treeoffset =
2582 offsetof(zfs_allow_node_t, z_localdescend);
2583 allowcb.a_permcnt = 0;
2584 zfs_iter_perms(&curperms->z_sets, banner, &allowcb);
2585
2586 (void) snprintf(banner, sizeof (banner),
fb5f0bc8
BB		 2587 gettext("Create time permissions on (%s)"),
2588 curperms->z_setpoint);
34dc7c2f
BB		 2589 allowcb.a_treeoffset =
2590 offsetof(zfs_allow_node_t, z_localdescend);
2591 allowcb.a_permcnt = 0;
2592 zfs_iter_perms(&curperms->z_crperms, banner, &allowcb);
2593
2594
2595 (void) snprintf(banner, sizeof (banner),
fb5f0bc8 2596 gettext("Local permissions on (%s)"), curperms->z_setpoint);
34dc7c2f
BB		 2597 allowcb.a_treeoffset = offsetof(zfs_allow_node_t, z_local);
2598 allowcb.a_permcnt = 0;
2599 zfs_iter_perms(&curperms->z_user, banner, &allowcb);
2600 zfs_iter_perms(&curperms->z_group, banner, &allowcb);
2601 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb);
2602
2603 (void) snprintf(banner, sizeof (banner),
fb5f0bc8
BB		 2604 gettext("Descendent permissions on (%s)"),
2605 curperms->z_setpoint);
34dc7c2f
BB		 2606 allowcb.a_treeoffset = offsetof(zfs_allow_node_t, z_descend);
2607 allowcb.a_permcnt = 0;
2608 zfs_iter_perms(&curperms->z_user, banner, &allowcb);
2609 zfs_iter_perms(&curperms->z_group, banner, &allowcb);
2610 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb);
2611
2612 (void) snprintf(banner, sizeof (banner),
fb5f0bc8 2613 gettext("Local+Descendent permissions on (%s)"),
34dc7c2f
BB		 2614 curperms->z_setpoint);
2615 allowcb.a_treeoffset =
2616 offsetof(zfs_allow_node_t, z_localdescend);
2617 allowcb.a_permcnt = 0;
2618 zfs_iter_perms(&curperms->z_user, banner, &allowcb);
2619 zfs_iter_perms(&curperms->z_group, banner, &allowcb);
2620 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb);
2621
2622 (void) printf("%s", LINES);
2623 }
2624 zfs_free_allows(perms);
2625 return (0);
2626}
2627
2628#define ALLOWOPTIONS "ldcsu:g:e"
2629#define UNALLOWOPTIONS "ldcsu:g:er"
2630
2631/*
2632 * Validate options, and build necessary datastructure to display/remove/add
2633 * permissions.
2634 * Returns 0 - If permissions should be added/removed
2635 * Returns 1 - If permissions should be displayed.
2636 * Returns -1 - on failure
2637 */
2638int
2639parse_allow_args(int *argc, char **argv[], boolean_t unallow,
2640 char **ds, int *recurse, nvlist_t **zperms)
2641{
2642 int c;
2643 char *options = unallow ? UNALLOWOPTIONS : ALLOWOPTIONS;
2644 zfs_deleg_inherit_t deleg_type = ZFS_DELEG_NONE;
2645 zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN;
2646 char *who = NULL;
2647 char *perms = NULL;
2648 zfs_handle_t *zhp;
2649
2650 while ((c = getopt(*argc, *argv, options)) != -1) {
2651 switch (c) {
2652 case 'l':
2653 if (who_type == ZFS_DELEG_CREATE ||
2654 who_type == ZFS_DELEG_NAMED_SET)
2655 usage(B_FALSE);
2656
2657 deleg_type |= ZFS_DELEG_PERM_LOCAL;
2658 break;
2659 case 'd':
2660 if (who_type == ZFS_DELEG_CREATE ||
2661 who_type == ZFS_DELEG_NAMED_SET)
2662 usage(B_FALSE);
2663
2664 deleg_type |= ZFS_DELEG_PERM_DESCENDENT;
2665 break;
2666 case 'r':
2667 *recurse = B_TRUE;
2668 break;
2669 case 'c':
2670 if (who_type != ZFS_DELEG_WHO_UNKNOWN)
2671 usage(B_FALSE);
2672 if (deleg_type)
2673 usage(B_FALSE);
2674 who_type = ZFS_DELEG_CREATE;
2675 break;
2676 case 's':
2677 if (who_type != ZFS_DELEG_WHO_UNKNOWN)
2678 usage(B_FALSE);
2679 if (deleg_type)
2680 usage(B_FALSE);
2681 who_type = ZFS_DELEG_NAMED_SET;
2682 break;
2683 case 'u':
2684 if (who_type != ZFS_DELEG_WHO_UNKNOWN)
2685 usage(B_FALSE);
2686 who_type = ZFS_DELEG_USER;
2687 who = optarg;
2688 break;
2689 case 'g':
2690 if (who_type != ZFS_DELEG_WHO_UNKNOWN)
2691 usage(B_FALSE);
2692 who_type = ZFS_DELEG_GROUP;
2693 who = optarg;
2694 break;
2695 case 'e':
2696 if (who_type != ZFS_DELEG_WHO_UNKNOWN)
2697 usage(B_FALSE);
2698 who_type = ZFS_DELEG_EVERYONE;
2699 break;
2700 default:
2701 usage(B_FALSE);
2702 break;
2703 }
2704 }
2705
2706 if (deleg_type == 0)
2707 deleg_type = ZFS_DELEG_PERM_LOCALDESCENDENT;
2708
2709 *argc -= optind;
2710 *argv += optind;
2711
2712 if (unallow == B_FALSE && *argc == 1) {
2713 /*
2714 * Only print permissions if no options were processed
2715 */
2716 if (optind == 1)
2717 return (1);
2718 else
2719 usage(B_FALSE);
2720 }
2721
2722 /*
2723 * initialize variables for zfs_build_perms based on number
2724 * of arguments.
2725 * 3 arguments ==> zfs [un]allow joe perm,perm,perm <dataset> or
2726 * zfs [un]allow -s @set1 perm,perm <dataset>
2727 * 2 arguments ==> zfs [un]allow -c perm,perm <dataset> or
2728 * zfs [un]allow -u|-g <name> perm <dataset> or
2729 * zfs [un]allow -e perm,perm <dataset>
2730 * zfs unallow joe <dataset>
2731 * zfs unallow -s @set1 <dataset>
2732 * 1 argument ==> zfs [un]allow -e <dataset> or
2733 * zfs [un]allow -c <dataset>
2734 */
2735
2736 switch (*argc) {
2737 case 3:
2738 perms = (*argv)[1];
2739 who = (*argv)[0];
2740 *ds = (*argv)[2];
2741
2742 /*
2743 * advance argc/argv for do_allow cases.
2744 * for do_allow case make sure who have a know who type
2745 * and its not a permission set.
2746 */
2747 if (unallow == B_TRUE) {
2748 *argc -= 2;
2749 *argv += 2;
2750 } else if (who_type != ZFS_DELEG_WHO_UNKNOWN &&
2751 who_type != ZFS_DELEG_NAMED_SET)
2752 usage(B_FALSE);
2753 break;
2754
2755 case 2:
2756 if (unallow == B_TRUE && (who_type == ZFS_DELEG_EVERYONE ||
2757 who_type == ZFS_DELEG_CREATE || who != NULL)) {
2758 perms = (*argv)[0];
2759 *ds = (*argv)[1];
2760 } else {
2761 if (unallow == B_FALSE &&
2762 (who_type == ZFS_DELEG_WHO_UNKNOWN ||
2763 who_type == ZFS_DELEG_NAMED_SET))
2764 usage(B_FALSE);
2765 else if (who_type == ZFS_DELEG_WHO_UNKNOWN ||
2766 who_type == ZFS_DELEG_NAMED_SET)
2767 who = (*argv)[0];
2768 else if (who_type != ZFS_DELEG_NAMED_SET)
2769 perms = (*argv)[0];
2770 *ds = (*argv)[1];
2771 }
2772 if (unallow == B_TRUE) {
2773 (*argc)--;
2774 (*argv)++;
2775 }
2776 break;
2777
2778 case 1:
2779 if (unallow == B_FALSE)
2780 usage(B_FALSE);
2781 if (who == NULL && who_type != ZFS_DELEG_CREATE &&
2782 who_type != ZFS_DELEG_EVERYONE)
2783 usage(B_FALSE);
2784 *ds = (*argv)[0];
2785 break;
2786
2787 default:
2788 usage(B_FALSE);
2789 }
2790
2791 if (strrchr(*ds, '@')) {
2792 (void) fprintf(stderr,
2793 gettext("Can't set or remove 'allow' permissions "
2794 "on snapshots.\n"));
2795 return (-1);
2796 }
2797
2798 if ((zhp = zfs_open(g_zfs, *ds, ZFS_TYPE_DATASET)) == NULL)
2799 return (-1);
2800
2801 if ((zfs_build_perms(zhp, who, perms,
2802 who_type, deleg_type, zperms)) != 0) {
2803 zfs_close(zhp);
2804 return (-1);
2805 }
2806 zfs_close(zhp);
2807 return (0);
2808}
2809
2810static int
2811zfs_do_allow(int argc, char **argv)
2812{
2813 char *ds;
2814 nvlist_t *zperms = NULL;
2815 zfs_handle_t *zhp;
2816 int unused;
2817 int ret;
2818
2819 if ((ret = parse_allow_args(&argc, &argv, B_FALSE, &ds,
2820 &unused, &zperms)) == -1)
2821 return (1);
2822
2823 if (ret == 1)
2824 return (zfs_print_allows(argv[0]));
2825
2826 if ((zhp = zfs_open(g_zfs, ds, ZFS_TYPE_DATASET)) == NULL)
2827 return (1);
2828
2829 if (zfs_perm_set(zhp, zperms)) {
2830 zfs_close(zhp);
2831 nvlist_free(zperms);
2832 return (1);
2833 }
2834 nvlist_free(zperms);
2835 zfs_close(zhp);
2836
2837 return (0);
2838}
2839
2840static int
2841unallow_callback(zfs_handle_t *zhp, void *data)
2842{
2843 nvlist_t *nvp = (nvlist_t *)data;
2844 int error;
2845
2846 error = zfs_perm_remove(zhp, nvp);
2847 if (error) {
2848 (void) fprintf(stderr, gettext("Failed to remove permissions "
2849 "on %s\n"), zfs_get_name(zhp));
2850 }
2851 return (error);
2852}
2853
2854static int
2855zfs_do_unallow(int argc, char **argv)
2856{
2857 int recurse = B_FALSE;
2858 char *ds;
2859 int error;
2860 nvlist_t *zperms = NULL;
b128c09f 2861 int flags = 0;
34dc7c2f
BB		 2862
2863 if (parse_allow_args(&argc, &argv, B_TRUE,
2864 &ds, &recurse, &zperms) == -1)
2865 return (1);
2866
b128c09f
BB		 2867 if (recurse)
2868 flags |= ZFS_ITER_RECURSE;
2869 error = zfs_for_each(argc, argv, flags,
34dc7c2f 2870 ZFS_TYPE_FILESYSTEM|ZFS_TYPE_VOLUME, NULL,
b128c09f 2871 NULL, unallow_callback, (void *)zperms);
34dc7c2f
BB		 2872
2873 if (zperms)
2874 nvlist_free(zperms);
2875
2876 return (error);
2877}
2878
2879typedef struct get_all_cbdata {
2880 zfs_handle_t **cb_handles;
2881 size_t cb_alloc;
2882 size_t cb_used;
2883 uint_t cb_types;
2884 boolean_t cb_verbose;
2885} get_all_cbdata_t;
2886
2887#define CHECK_SPINNER 30
2888#define SPINNER_TIME 3 /* seconds */
2889#define MOUNT_TIME 5 /* seconds */
2890
2891static int
2892get_one_dataset(zfs_handle_t *zhp, void *data)
2893{
2894 static char spin[] = { '-', '\\', '|', '/' };
2895 static int spinval = 0;
2896 static int spincheck = 0;
2897 static time_t last_spin_time = (time_t)0;
2898 get_all_cbdata_t *cbp = data;
2899 zfs_type_t type = zfs_get_type(zhp);
2900
2901 if (cbp->cb_verbose) {
2902 if (--spincheck < 0) {
2903 time_t now = time(NULL);
2904 if (last_spin_time + SPINNER_TIME < now) {
2905 (void) printf("\b%c", spin[spinval++ % 4]);
2906 (void) fflush(stdout);
2907 last_spin_time = now;
2908 }
2909 spincheck = CHECK_SPINNER;
2910 }
2911 }
2912
2913 /*
2914 * Interate over any nested datasets.
2915 */
2916 if (type == ZFS_TYPE_FILESYSTEM &&
2917 zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
2918 zfs_close(zhp);
2919 return (1);
2920 }
2921
2922 /*
2923 * Skip any datasets whose type does not match.
2924 */
2925 if ((type & cbp->cb_types) == 0) {
2926 zfs_close(zhp);
2927 return (0);
2928 }
2929
2930 if (cbp->cb_alloc == cbp->cb_used) {
2931 zfs_handle_t **handles;
2932
2933 if (cbp->cb_alloc == 0)
2934 cbp->cb_alloc = 64;
2935 else
2936 cbp->cb_alloc *= 2;
2937
2938 handles = safe_malloc(cbp->cb_alloc * sizeof (void *));
2939
2940 if (cbp->cb_handles) {
2941 bcopy(cbp->cb_handles, handles,
2942 cbp->cb_used * sizeof (void *));
2943 free(cbp->cb_handles);
2944 }
2945
2946 cbp->cb_handles = handles;
2947 }
2948
2949 cbp->cb_handles[cbp->cb_used++] = zhp;
2950
2951 return (0);
2952}
2953
2954static void
2955get_all_datasets(uint_t types, zfs_handle_t ***dslist, size_t *count,
2956 boolean_t verbose)
2957{
2958 get_all_cbdata_t cb = { 0 };
2959 cb.cb_types = types;
2960 cb.cb_verbose = verbose;
2961
2962 if (verbose) {
2963 (void) printf("%s: *", gettext("Reading ZFS config"));
2964 (void) fflush(stdout);
2965 }
2966
2967 (void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
2968
2969 *dslist = cb.cb_handles;
2970 *count = cb.cb_used;
2971
2972 if (verbose) {
2973 (void) printf("\b%s\n", gettext("done."));
2974 }
2975}
2976
2977static int
2978dataset_cmp(const void *a, const void *b)
2979{
2980 zfs_handle_t **za = (zfs_handle_t **)a;
2981 zfs_handle_t **zb = (zfs_handle_t **)b;
2982 char mounta[MAXPATHLEN];
2983 char mountb[MAXPATHLEN];
2984 boolean_t gota, gotb;
2985
2986 if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0)
2987 verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta,
2988 sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0);
2989 if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0)
2990 verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb,
2991 sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0);
2992
2993 if (gota && gotb)
2994 return (strcmp(mounta, mountb));
2995
2996 if (gota)
2997 return (-1);
2998 if (gotb)
2999 return (1);
3000
3001 return (strcmp(zfs_get_name(a), zfs_get_name(b)));
3002}
3003
3004/*
3005 * Generic callback for sharing or mounting filesystems. Because the code is so
3006 * similar, we have a common function with an extra parameter to determine which
3007 * mode we are using.
3008 */
3009#define OP_SHARE 0x1
3010#define OP_MOUNT 0x2
3011
3012/*
3013 * Share or mount a dataset.
3014 */
3015static int
3016share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
3017 boolean_t explicit, const char *options)
3018{
3019 char mountpoint[ZFS_MAXPROPLEN];
3020 char shareopts[ZFS_MAXPROPLEN];
3021 char smbshareopts[ZFS_MAXPROPLEN];
3022 const char *cmdname = op == OP_SHARE ? "share" : "mount";
3023 struct mnttab mnt;
3024 uint64_t zoned, canmount;
3025 zfs_type_t type = zfs_get_type(zhp);
3026 boolean_t shared_nfs, shared_smb;
3027
3028 assert(type & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME));
3029
3030 if (type == ZFS_TYPE_FILESYSTEM) {
3031 /*
3032 * Check to make sure we can mount/share this dataset. If we
3033 * are in the global zone and the filesystem is exported to a
3034 * local zone, or if we are in a local zone and the
3035 * filesystem is not exported, then it is an error.
3036 */
3037 zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
3038
3039 if (zoned && getzoneid() == GLOBAL_ZONEID) {
3040 if (!explicit)
3041 return (0);
3042
3043 (void) fprintf(stderr, gettext("cannot %s '%s': "
3044 "dataset is exported to a local zone\n"), cmdname,
3045 zfs_get_name(zhp));
3046 return (1);
3047
3048 } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
3049 if (!explicit)
3050 return (0);
3051
3052 (void) fprintf(stderr, gettext("cannot %s '%s': "
3053 "permission denied\n"), cmdname,
3054 zfs_get_name(zhp));
3055 return (1);
3056 }
3057
3058 /*
3059 * Ignore any filesystems which don't apply to us. This
3060 * includes those with a legacy mountpoint, or those with
3061 * legacy share options.
3062 */
3063 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
3064 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
3065 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
3066 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
3067 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
3068 sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
34dc7c2f
BB		 3069
3070 if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
3071 strcmp(smbshareopts, "off") == 0) {
3072 if (!explicit)
3073 return (0);
3074
3075 (void) fprintf(stderr, gettext("cannot share '%s': "
3076 "legacy share\n"), zfs_get_name(zhp));
3077 (void) fprintf(stderr, gettext("use share(1M) to "
fb5f0bc8
BB		 3078 "share this filesystem, or set "
3079 "sharenfs property on\n"));
34dc7c2f
BB		 3080 return (1);
3081 }
3082
3083 /*
3084 * We cannot share or mount legacy filesystems. If the
3085 * shareopts is non-legacy but the mountpoint is legacy, we
3086 * treat it as a legacy share.
3087 */
3088 if (strcmp(mountpoint, "legacy") == 0) {
3089 if (!explicit)
3090 return (0);
3091
3092 (void) fprintf(stderr, gettext("cannot %s '%s': "
3093 "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
3094 (void) fprintf(stderr, gettext("use %s(1M) to "
3095 "%s this filesystem\n"), cmdname, cmdname);
3096 return (1);
3097 }
3098
3099 if (strcmp(mountpoint, "none") == 0) {
3100 if (!explicit)
3101 return (0);
3102
3103 (void) fprintf(stderr, gettext("cannot %s '%s': no "
3104 "mountpoint set\n"), cmdname, zfs_get_name(zhp));
3105 return (1);
3106 }
3107
3108 /*
3109 * canmount explicit outcome
3110 * on no pass through
3111 * on yes pass through
3112 * off no return 0
3113 * off yes display error, return 1
3114 * noauto no return 0
3115 * noauto yes pass through
3116 */
fb5f0bc8 3117 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
34dc7c2f
BB		 3118 if (canmount == ZFS_CANMOUNT_OFF) {
3119 if (!explicit)
3120 return (0);
3121
3122 (void) fprintf(stderr, gettext("cannot %s '%s': "
3123 "'canmount' property is set to 'off'\n"), cmdname,
3124 zfs_get_name(zhp));
3125 return (1);
3126 } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
3127 return (0);
3128 }
3129
3130 /*
3131 * At this point, we have verified that the mountpoint and/or
3132 * shareopts are appropriate for auto management. If the
3133 * filesystem is already mounted or shared, return (failing
3134 * for explicit requests); otherwise mount or share the
3135 * filesystem.
3136 */
3137 switch (op) {
3138 case OP_SHARE:
3139
3140 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
3141 shared_smb = zfs_is_shared_smb(zhp, NULL);
3142
3143 if (shared_nfs && shared_smb ||
3144 (shared_nfs && strcmp(shareopts, "on") == 0 &&
3145 strcmp(smbshareopts, "off") == 0) ||
3146 (shared_smb && strcmp(smbshareopts, "on") == 0 &&
3147 strcmp(shareopts, "off") == 0)) {
3148 if (!explicit)
3149 return (0);
3150
3151 (void) fprintf(stderr, gettext("cannot share "
3152 "'%s': filesystem already shared\n"),
3153 zfs_get_name(zhp));
3154 return (1);
3155 }
3156
3157 if (!zfs_is_mounted(zhp, NULL) &&
3158 zfs_mount(zhp, NULL, 0) != 0)
3159 return (1);
3160
3161 if (protocol == NULL) {
3162 if (zfs_shareall(zhp) != 0)
3163 return (1);
3164 } else if (strcmp(protocol, "nfs") == 0) {
3165 if (zfs_share_nfs(zhp))
3166 return (1);
3167 } else if (strcmp(protocol, "smb") == 0) {
3168 if (zfs_share_smb(zhp))
3169 return (1);
3170 } else {
3171 (void) fprintf(stderr, gettext("cannot share "
3172 "'%s': invalid share type '%s' "
3173 "specified\n"),
3174 zfs_get_name(zhp), protocol);
3175 return (1);
3176 }
3177
3178 break;
3179
3180 case OP_MOUNT:
3181 if (options == NULL)
3182 mnt.mnt_mntopts = "";
3183 else
3184 mnt.mnt_mntopts = (char *)options;
3185
3186 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
3187 zfs_is_mounted(zhp, NULL)) {
3188 if (!explicit)
3189 return (0);
3190
3191 (void) fprintf(stderr, gettext("cannot mount "
3192 "'%s': filesystem already mounted\n"),
3193 zfs_get_name(zhp));
3194 return (1);
3195 }
3196
3197 if (zfs_mount(zhp, options, flags) != 0)
3198 return (1);
3199 break;
3200 }
3201 } else {
3202 assert(op == OP_SHARE);
3203
3204 /*
3205 * Ignore any volumes that aren't shared.
3206 */
3207 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts,
3208 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
3209
3210 if (strcmp(shareopts, "off") == 0) {
3211 if (!explicit)
3212 return (0);
3213
3214 (void) fprintf(stderr, gettext("cannot share '%s': "
3215 "'shareiscsi' property not set\n"),
3216 zfs_get_name(zhp));
3217 (void) fprintf(stderr, gettext("set 'shareiscsi' "
3218 "property or use iscsitadm(1M) to share this "
3219 "volume\n"));
3220 return (1);
3221 }
3222
3223 if (zfs_is_shared_iscsi(zhp)) {
3224 if (!explicit)
3225 return (0);
3226
3227 (void) fprintf(stderr, gettext("cannot share "
3228 "'%s': volume already shared\n"),
3229 zfs_get_name(zhp));
3230 return (1);
3231 }
3232
3233 if (zfs_share_iscsi(zhp) != 0)
3234 return (1);
3235 }
3236
3237 return (0);
3238}
3239
3240/*
3241 * Reports progress in the form "(current/total)". Not thread-safe.
3242 */
3243static void
3244report_mount_progress(int current, int total)
3245{
3246 static int len;
3247 static char *reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"
3248 "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b";
3249 static time_t last_progress_time;
3250 time_t now = time(NULL);
3251
3252 /* report 1..n instead of 0..n-1 */
3253 ++current;
3254
3255 /* display header if we're here for the first time */
3256 if (current == 1) {
3257 (void) printf(gettext("Mounting ZFS filesystems: "));
3258 len = 0;
3259 } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
3260 /* too soon to report again */
3261 return;
3262 }
3263
3264 last_progress_time = now;
3265
3266 /* back up to prepare for overwriting */
3267 if (len)
3268 (void) printf("%*.*s", len, len, reverse);
3269
3270 /* We put a newline at the end if this is the last one. */
3271 len = printf("(%d/%d)%s", current, total, current == total ? "\n" : "");
3272 (void) fflush(stdout);
3273}
3274
3275static void
3276append_options(char *mntopts, char *newopts)
3277{
3278 int len = strlen(mntopts);
3279
3280 /* original length plus new string to append plus 1 for the comma */
3281 if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
3282 (void) fprintf(stderr, gettext("the opts argument for "
3283 "'%c' option is too long (more than %d chars)\n"),
3284 "-o", MNT_LINE_MAX);
3285 usage(B_FALSE);
3286 }
3287
3288 if (*mntopts)
3289 mntopts[len++] = ',';
3290
3291 (void) strcpy(&mntopts[len], newopts);
3292}
3293
3294static int
3295share_mount(int op, int argc, char **argv)
3296{
3297 int do_all = 0;
3298 boolean_t verbose = B_FALSE;
3299 int c, ret = 0;
3300 char *options = NULL;
3301 int types, flags = 0;
3302
3303 /* check options */
3304 while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a"))
3305 != -1) {
3306 switch (c) {
3307 case 'a':
3308 do_all = 1;
3309 break;
3310 case 'v':
3311 verbose = B_TRUE;
3312 break;
3313 case 'o':
3314 if (*optarg == '\0') {
3315 (void) fprintf(stderr, gettext("empty mount "
3316 "options (-o) specified\n"));
3317 usage(B_FALSE);
3318 }
3319
3320 if (options == NULL)
3321 options = safe_malloc(MNT_LINE_MAX + 1);
3322
3323 /* option validation is done later */
3324 append_options(options, optarg);
3325 break;
3326
3327 case 'O':
3328 flags |= MS_OVERLAY;
3329 break;
3330 case ':':
3331 (void) fprintf(stderr, gettext("missing argument for "
3332 "'%c' option\n"), optopt);
3333 usage(B_FALSE);
3334 break;
3335 case '?':
3336 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3337 optopt);
3338 usage(B_FALSE);
3339 }
3340 }
3341
3342 argc -= optind;
3343 argv += optind;
3344
3345 /* check number of arguments */
3346 if (do_all) {
3347 zfs_handle_t **dslist = NULL;
3348 size_t i, count = 0;
3349 char *protocol = NULL;
3350
3351 if (op == OP_MOUNT) {
3352 types = ZFS_TYPE_FILESYSTEM;
3353 } else if (argc > 0) {
3354 if (strcmp(argv[0], "nfs") == 0 ||
3355 strcmp(argv[0], "smb") == 0) {
3356 types = ZFS_TYPE_FILESYSTEM;
3357 } else if (strcmp(argv[0], "iscsi") == 0) {
3358 types = ZFS_TYPE_VOLUME;
3359 } else {
3360 (void) fprintf(stderr, gettext("share type "
3361 "must be 'nfs', 'smb' or 'iscsi'\n"));
3362 usage(B_FALSE);
3363 }
3364 protocol = argv[0];
3365 argc--;
3366 argv++;
3367 } else {
3368 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
3369 }
3370
3371 if (argc != 0) {
3372 (void) fprintf(stderr, gettext("too many arguments\n"));
3373 usage(B_FALSE);
3374 }
3375
3376 get_all_datasets(types, &dslist, &count, verbose);
3377
3378 if (count == 0)
3379 return (0);
3380
3381 qsort(dslist, count, sizeof (void *), dataset_cmp);
3382
3383 for (i = 0; i < count; i++) {
3384 if (verbose)
3385 report_mount_progress(i, count);
3386
3387 if (share_mount_one(dslist[i], op, flags, protocol,
3388 B_FALSE, options) != 0)
3389 ret = 1;
3390 zfs_close(dslist[i]);
3391 }
3392
3393 free(dslist);
3394 } else if (argc == 0) {
3395 struct mnttab entry;
3396
3397 if ((op == OP_SHARE) || (options != NULL)) {
3398 (void) fprintf(stderr, gettext("missing filesystem "
3399 "argument (specify -a for all)\n"));
3400 usage(B_FALSE);
3401 }
3402
3403 /*
3404 * When mount is given no arguments, go through /etc/mnttab and
3405 * display any active ZFS mounts. We hide any snapshots, since
3406 * they are controlled automatically.
3407 */
3408 rewind(mnttab_file);
3409 while (getmntent(mnttab_file, &entry) == 0) {
3410 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
3411 strchr(entry.mnt_special, '@') != NULL)
3412 continue;
3413
3414 (void) printf("%-30s %s\n", entry.mnt_special,
3415 entry.mnt_mountp);
3416 }
3417
3418 } else {
3419 zfs_handle_t *zhp;
3420
3421 types = ZFS_TYPE_FILESYSTEM;
3422 if (op == OP_SHARE)
3423 types |= ZFS_TYPE_VOLUME;
3424
3425 if (argc > 1) {
3426 (void) fprintf(stderr,
3427 gettext("too many arguments\n"));
3428 usage(B_FALSE);
3429 }
3430
3431 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) {
3432 ret = 1;
3433 } else {
3434 ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
3435 options);
3436 zfs_close(zhp);
3437 }
3438 }
3439
3440 return (ret);
3441}
3442
3443/*
3444 * zfs mount -a [nfs | iscsi]
3445 * zfs mount filesystem
3446 *
3447 * Mount all filesystems, or mount the given filesystem.
3448 */
3449static int
3450zfs_do_mount(int argc, char **argv)
3451{
3452 return (share_mount(OP_MOUNT, argc, argv));
3453}
3454
3455/*
3456 * zfs share -a [nfs | iscsi | smb]
3457 * zfs share filesystem
3458 *
3459 * Share all filesystems, or share the given filesystem.
3460 */
3461static int
3462zfs_do_share(int argc, char **argv)
3463{
3464 return (share_mount(OP_SHARE, argc, argv));
3465}
3466
3467typedef struct unshare_unmount_node {
3468 zfs_handle_t *un_zhp;
3469 char *un_mountp;
3470 uu_avl_node_t un_avlnode;
3471} unshare_unmount_node_t;
3472
3473/* ARGSUSED */
3474static int
3475unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
3476{
3477 const unshare_unmount_node_t *l = larg;
3478 const unshare_unmount_node_t *r = rarg;
3479
3480 return (strcmp(l->un_mountp, r->un_mountp));
3481}
3482
3483/*
3484 * Convenience routine used by zfs_do_umount() and manual_unmount(). Given an
3485 * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem,
3486 * and unmount it appropriately.
3487 */
3488static int
3489unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
3490{
3491 zfs_handle_t *zhp;
3492 int ret;
3493 struct stat64 statbuf;
3494 struct extmnttab entry;
3495 const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
3496 ino_t path_inode;
3497
3498 /*
3499 * Search for the path in /etc/mnttab. Rather than looking for the
3500 * specific path, which can be fooled by non-standard paths (i.e. ".."
3501 * or "//"), we stat() the path and search for the corresponding
3502 * (major,minor) device pair.
3503 */
3504 if (stat64(path, &statbuf) != 0) {
3505 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
3506 cmdname, path, strerror(errno));
3507 return (1);
3508 }
3509 path_inode = statbuf.st_ino;
3510
3511 /*
3512 * Search for the given (major,minor) pair in the mount table.
3513 */
3514 rewind(mnttab_file);
3515 while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) {
3516 if (entry.mnt_major == major(statbuf.st_dev) &&
3517 entry.mnt_minor == minor(statbuf.st_dev))
3518 break;
3519 }
3520 if (ret != 0) {
3521 if (op == OP_SHARE) {
3522 (void) fprintf(stderr, gettext("cannot %s '%s': not "
3523 "currently mounted\n"), cmdname, path);
3524 return (1);
3525 }
3526 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"),
3527 path);
3528 if ((ret = umount2(path, flags)) != 0)
3529 (void) fprintf(stderr, gettext("%s: %s\n"), path,
3530 strerror(errno));
3531 return (ret != 0);
3532 }
3533
3534 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
3535 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
3536 "filesystem\n"), cmdname, path);
3537 return (1);
3538 }
3539
3540 if ((zhp = zfs_open(g_zfs, entry.mnt_special,
3541 ZFS_TYPE_FILESYSTEM)) == NULL)
3542 return (1);
3543
34dc7c2f 3544 ret = 1;
b128c09f
BB		 3545 if (stat64(entry.mnt_mountp, &statbuf) != 0) {
3546 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
3547 cmdname, path, strerror(errno));
3548 goto out;
3549 } else if (statbuf.st_ino != path_inode) {
3550 (void) fprintf(stderr, gettext("cannot "
3551 "%s '%s': not a mountpoint\n"), cmdname, path);
3552 goto out;
3553 }
3554
34dc7c2f
BB		 3555 if (op == OP_SHARE) {
3556 char nfs_mnt_prop[ZFS_MAXPROPLEN];
3557 char smbshare_prop[ZFS_MAXPROPLEN];
3558
3559 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
3560 sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
3561 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
3562 sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
3563
3564 if (strcmp(nfs_mnt_prop, "off") == 0 &&
3565 strcmp(smbshare_prop, "off") == 0) {
3566 (void) fprintf(stderr, gettext("cannot unshare "
3567 "'%s': legacy share\n"), path);
3568 (void) fprintf(stderr, gettext("use "
3569 "unshare(1M) to unshare this filesystem\n"));
3570 } else if (!zfs_is_shared(zhp)) {
3571 (void) fprintf(stderr, gettext("cannot unshare '%s': "
3572 "not currently shared\n"), path);
3573 } else {
3574 ret = zfs_unshareall_bypath(zhp, path);
3575 }
3576 } else {
3577 char mtpt_prop[ZFS_MAXPROPLEN];
3578
3579 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
3580 sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
3581
b128c09f 3582 if (is_manual) {
34dc7c2f
BB		 3583 ret = zfs_unmount(zhp, NULL, flags);
3584 } else if (strcmp(mtpt_prop, "legacy") == 0) {
3585 (void) fprintf(stderr, gettext("cannot unmount "
3586 "'%s': legacy mountpoint\n"),
3587 zfs_get_name(zhp));
3588 (void) fprintf(stderr, gettext("use umount(1M) "
3589 "to unmount this filesystem\n"));
3590 } else {
3591 ret = zfs_unmountall(zhp, flags);
3592 }
3593 }
3594
b128c09f 3595out:
34dc7c2f
BB		 3596 zfs_close(zhp);
3597
3598 return (ret != 0);
3599}
3600
3601/*
3602 * Generic callback for unsharing or unmounting a filesystem.
3603 */
3604static int
3605unshare_unmount(int op, int argc, char **argv)
3606{
3607 int do_all = 0;
3608 int flags = 0;
3609 int ret = 0;
3610 int types, c;
3611 zfs_handle_t *zhp;
3612 char nfsiscsi_mnt_prop[ZFS_MAXPROPLEN];
3613 char sharesmb[ZFS_MAXPROPLEN];
3614
3615 /* check options */
3616 while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
3617 switch (c) {
3618 case 'a':
3619 do_all = 1;
3620 break;
3621 case 'f':
3622 flags = MS_FORCE;
3623 break;
3624 case '?':
3625 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3626 optopt);
3627 usage(B_FALSE);
3628 }
3629 }
3630
3631 argc -= optind;
3632 argv += optind;
3633
3634 if (do_all) {
3635 /*
3636 * We could make use of zfs_for_each() to walk all datasets in
3637 * the system, but this would be very inefficient, especially
3638 * since we would have to linearly search /etc/mnttab for each
3639 * one. Instead, do one pass through /etc/mnttab looking for
3640 * zfs entries and call zfs_unmount() for each one.
3641 *
3642 * Things get a little tricky if the administrator has created
3643 * mountpoints beneath other ZFS filesystems. In this case, we
3644 * have to unmount the deepest filesystems first. To accomplish
3645 * this, we place all the mountpoints in an AVL tree sorted by
3646 * the special type (dataset name), and walk the result in
3647 * reverse to make sure to get any snapshots first.
3648 */
3649 struct mnttab entry;
3650 uu_avl_pool_t *pool;
3651 uu_avl_t *tree;
3652 unshare_unmount_node_t *node;
3653 uu_avl_index_t idx;
3654 uu_avl_walk_t *walk;
3655
3656 if (argc != 0) {
3657 (void) fprintf(stderr, gettext("too many arguments\n"));
3658 usage(B_FALSE);
3659 }
3660
3661 if ((pool = uu_avl_pool_create("unmount_pool",
3662 sizeof (unshare_unmount_node_t),
3663 offsetof(unshare_unmount_node_t, un_avlnode),
3664 unshare_unmount_compare,
3665 UU_DEFAULT)) == NULL) {
3666 (void) fprintf(stderr, gettext("internal error: "
3667 "out of memory\n"));
3668 exit(1);
3669 }
3670
3671 if ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL) {
3672 (void) fprintf(stderr, gettext("internal error: "
3673 "out of memory\n"));
3674 exit(1);
3675 }
3676
3677 rewind(mnttab_file);
3678 while (getmntent(mnttab_file, &entry) == 0) {
3679
3680 /* ignore non-ZFS entries */
3681 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
3682 continue;
3683
3684 /* ignore snapshots */
3685 if (strchr(entry.mnt_special, '@') != NULL)
3686 continue;
3687
3688 if ((zhp = zfs_open(g_zfs, entry.mnt_special,
3689 ZFS_TYPE_FILESYSTEM)) == NULL) {
3690 ret = 1;
3691 continue;
3692 }
3693
3694 switch (op) {
3695 case OP_SHARE:
3696 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
3697 nfsiscsi_mnt_prop,
3698 sizeof (nfsiscsi_mnt_prop),
3699 NULL, NULL, 0, B_FALSE) == 0);
3700 if (strcmp(nfsiscsi_mnt_prop, "off") != 0)
3701 break;
3702 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
3703 nfsiscsi_mnt_prop,
3704 sizeof (nfsiscsi_mnt_prop),
3705 NULL, NULL, 0, B_FALSE) == 0);
3706 if (strcmp(nfsiscsi_mnt_prop, "off") == 0)
3707 continue;
3708 break;
3709 case OP_MOUNT:
3710 /* Ignore legacy mounts */
3711 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
3712 nfsiscsi_mnt_prop,
3713 sizeof (nfsiscsi_mnt_prop),
3714 NULL, NULL, 0, B_FALSE) == 0);
3715 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0)
3716 continue;
3717 /* Ignore canmount=noauto mounts */
3718 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
3719 ZFS_CANMOUNT_NOAUTO)
3720 continue;
3721 default:
3722 break;
3723 }
3724
3725 node = safe_malloc(sizeof (unshare_unmount_node_t));
3726 node->un_zhp = zhp;
3727
3728 if ((node->un_mountp = strdup(entry.mnt_mountp)) ==
3729 NULL) {
3730 (void) fprintf(stderr, gettext("internal error:"
3731 " out of memory\n"));
3732 exit(1);
3733 }
3734
3735 uu_avl_node_init(node, &node->un_avlnode, pool);
3736
3737 if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
3738 uu_avl_insert(tree, node, idx);
3739 } else {
3740 zfs_close(node->un_zhp);
3741 free(node->un_mountp);
3742 free(node);
3743 }
3744 }
3745
3746 /*
3747 * Walk the AVL tree in reverse, unmounting each filesystem and
3748 * removing it from the AVL tree in the process.
3749 */
3750 if ((walk = uu_avl_walk_start(tree,
3751 UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL) {
3752 (void) fprintf(stderr,
3753 gettext("internal error: out of memory"));
3754 exit(1);
3755 }
3756
3757 while ((node = uu_avl_walk_next(walk)) != NULL) {
3758 uu_avl_remove(tree, node);
3759
3760 switch (op) {
3761 case OP_SHARE:
3762 if (zfs_unshareall_bypath(node->un_zhp,
3763 node->un_mountp) != 0)
3764 ret = 1;
3765 break;
3766
3767 case OP_MOUNT:
3768 if (zfs_unmount(node->un_zhp,
3769 node->un_mountp, flags) != 0)
3770 ret = 1;
3771 break;
3772 }
3773
3774 zfs_close(node->un_zhp);
3775 free(node->un_mountp);
3776 free(node);
3777 }
3778
3779 uu_avl_walk_end(walk);
3780 uu_avl_destroy(tree);
3781 uu_avl_pool_destroy(pool);
3782
3783 if (op == OP_SHARE) {
3784 /*
3785 * Finally, unshare any volumes shared via iSCSI.
3786 */
3787 zfs_handle_t **dslist = NULL;
3788 size_t i, count = 0;
3789
3790 get_all_datasets(ZFS_TYPE_VOLUME, &dslist, &count,
3791 B_FALSE);
3792
3793 if (count != 0) {
3794 qsort(dslist, count, sizeof (void *),
3795 dataset_cmp);
3796
3797 for (i = 0; i < count; i++) {
3798 if (zfs_unshare_iscsi(dslist[i]) != 0)
3799 ret = 1;
3800 zfs_close(dslist[i]);
3801 }
3802
3803 free(dslist);
3804 }
3805 }
3806 } else {
3807 if (argc != 1) {
3808 if (argc == 0)
3809 (void) fprintf(stderr,
3810 gettext("missing filesystem argument\n"));
3811 else
3812 (void) fprintf(stderr,
3813 gettext("too many arguments\n"));
3814 usage(B_FALSE);
3815 }
3816
3817 /*
3818 * We have an argument, but it may be a full path or a ZFS
3819 * filesystem. Pass full paths off to unmount_path() (shared by
3820 * manual_unmount), otherwise open the filesystem and pass to
3821 * zfs_unmount().
3822 */
3823 if (argv[0][0] == '/')
3824 return (unshare_unmount_path(op, argv[0],
3825 flags, B_FALSE));
3826
3827 types = ZFS_TYPE_FILESYSTEM;
3828 if (op == OP_SHARE)
3829 types |= ZFS_TYPE_VOLUME;
3830
3831 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL)
3832 return (1);
3833
3834 if (zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
3835 verify(zfs_prop_get(zhp, op == OP_SHARE ?
3836 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
3837 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), NULL,
3838 NULL, 0, B_FALSE) == 0);
3839
3840 switch (op) {
3841 case OP_SHARE:
3842 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
3843 nfsiscsi_mnt_prop,
3844 sizeof (nfsiscsi_mnt_prop),
3845 NULL, NULL, 0, B_FALSE) == 0);
3846 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
3847 sharesmb, sizeof (sharesmb), NULL, NULL,
3848 0, B_FALSE) == 0);
3849
3850 if (strcmp(nfsiscsi_mnt_prop, "off") == 0 &&
3851 strcmp(sharesmb, "off") == 0) {
3852 (void) fprintf(stderr, gettext("cannot "
3853 "unshare '%s': legacy share\n"),
3854 zfs_get_name(zhp));
3855 (void) fprintf(stderr, gettext("use "
3856 "unshare(1M) to unshare this "
3857 "filesystem\n"));
3858 ret = 1;
3859 } else if (!zfs_is_shared(zhp)) {
3860 (void) fprintf(stderr, gettext("cannot "
3861 "unshare '%s': not currently "
3862 "shared\n"), zfs_get_name(zhp));
3863 ret = 1;
3864 } else if (zfs_unshareall(zhp) != 0) {
3865 ret = 1;
3866 }
3867 break;
3868
3869 case OP_MOUNT:
3870 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) {
3871 (void) fprintf(stderr, gettext("cannot "
3872 "unmount '%s': legacy "
3873 "mountpoint\n"), zfs_get_name(zhp));
3874 (void) fprintf(stderr, gettext("use "
3875 "umount(1M) to unmount this "
3876 "filesystem\n"));
3877 ret = 1;
3878 } else if (!zfs_is_mounted(zhp, NULL)) {
3879 (void) fprintf(stderr, gettext("cannot "
3880 "unmount '%s': not currently "
3881 "mounted\n"),
3882 zfs_get_name(zhp));
3883 ret = 1;
3884 } else if (zfs_unmountall(zhp, flags) != 0) {
3885 ret = 1;
3886 }
3887 break;
3888 }
3889 } else {
3890 assert(op == OP_SHARE);
3891
3892 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI,
3893 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop),
3894 NULL, NULL, 0, B_FALSE) == 0);
3895
3896 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) {
3897 (void) fprintf(stderr, gettext("cannot unshare "
3898 "'%s': 'shareiscsi' property not set\n"),
3899 zfs_get_name(zhp));
3900 (void) fprintf(stderr, gettext("set "
3901 "'shareiscsi' property or use "
3902 "iscsitadm(1M) to share this volume\n"));
3903 ret = 1;
3904 } else if (!zfs_is_shared_iscsi(zhp)) {
3905 (void) fprintf(stderr, gettext("cannot "
3906 "unshare '%s': not currently shared\n"),
3907 zfs_get_name(zhp));
3908 ret = 1;
3909 } else if (zfs_unshare_iscsi(zhp) != 0) {
3910 ret = 1;
3911 }
3912 }
3913
3914 zfs_close(zhp);
3915 }
3916
3917 return (ret);
3918}
3919
3920/*
3921 * zfs unmount -a
3922 * zfs unmount filesystem
3923 *
3924 * Unmount all filesystems, or a specific ZFS filesystem.
3925 */
3926static int
3927zfs_do_unmount(int argc, char **argv)
3928{
3929 return (unshare_unmount(OP_MOUNT, argc, argv));
3930}
3931
3932/*
3933 * zfs unshare -a
3934 * zfs unshare filesystem
3935 *
3936 * Unshare all filesystems, or a specific ZFS filesystem.
3937 */
3938static int
3939zfs_do_unshare(int argc, char **argv)
3940{
3941 return (unshare_unmount(OP_SHARE, argc, argv));
3942}
3943
3944/*
3945 * Called when invoked as /etc/fs/zfs/mount. Do the mount if the mountpoint is
3946 * 'legacy'. Otherwise, complain that use should be using 'zfs mount'.
3947 */
3948static int
3949manual_mount(int argc, char **argv)
3950{
3951 zfs_handle_t *zhp;
3952 char mountpoint[ZFS_MAXPROPLEN];
3953 char mntopts[MNT_LINE_MAX] = { '\0' };
3954 int ret;
3955 int c;
3956 int flags = 0;
3957 char *dataset, *path;
3958
3959 /* check options */
3960 while ((c = getopt(argc, argv, ":mo:O")) != -1) {
3961 switch (c) {
3962 case 'o':
3963 (void) strlcpy(mntopts, optarg, sizeof (mntopts));
3964 break;
3965 case 'O':
3966 flags |= MS_OVERLAY;
3967 break;
3968 case 'm':
3969 flags |= MS_NOMNTTAB;
3970 break;
3971 case ':':
3972 (void) fprintf(stderr, gettext("missing argument for "
3973 "'%c' option\n"), optopt);
3974 usage(B_FALSE);
3975 break;
3976 case '?':
3977 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3978 optopt);
3979 (void) fprintf(stderr, gettext("usage: mount [-o opts] "
3980 "<path>\n"));
3981 return (2);
3982 }
3983 }
3984
3985 argc -= optind;
3986 argv += optind;
3987
3988 /* check that we only have two arguments */
3989 if (argc != 2) {
3990 if (argc == 0)
3991 (void) fprintf(stderr, gettext("missing dataset "
3992 "argument\n"));
3993 else if (argc == 1)
3994 (void) fprintf(stderr,
3995 gettext("missing mountpoint argument\n"));
3996 else
3997 (void) fprintf(stderr, gettext("too many arguments\n"));
3998 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n");
3999 return (2);
4000 }
4001
4002 dataset = argv[0];
4003 path = argv[1];
4004
4005 /* try to open the dataset */
4006 if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL)
4007 return (1);
4008
4009 (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
4010 sizeof (mountpoint), NULL, NULL, 0, B_FALSE);
4011
4012 /* check for legacy mountpoint and complain appropriately */
4013 ret = 0;
4014 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
4015 if (mount(dataset, path, MS_OPTIONSTR | flags, MNTTYPE_ZFS,
4016 NULL, 0, mntopts, sizeof (mntopts)) != 0) {
4017 (void) fprintf(stderr, gettext("mount failed: %s\n"),
4018 strerror(errno));
4019 ret = 1;
4020 }
4021 } else {
4022 (void) fprintf(stderr, gettext("filesystem '%s' cannot be "
4023 "mounted using 'mount -F zfs'\n"), dataset);
4024 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' "
4025 "instead.\n"), path);
4026 (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' "
4027 "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n"));
4028 (void) fprintf(stderr, gettext("See zfs(1M) for more "
4029 "information.\n"));
4030 ret = 1;
4031 }
4032
4033 return (ret);
4034}
4035
4036/*
4037 * Called when invoked as /etc/fs/zfs/umount. Unlike a manual mount, we allow
4038 * unmounts of non-legacy filesystems, as this is the dominant administrative
4039 * interface.
4040 */
4041static int
4042manual_unmount(int argc, char **argv)
4043{
4044 int flags = 0;
4045 int c;
4046
4047 /* check options */
4048 while ((c = getopt(argc, argv, "f")) != -1) {
4049 switch (c) {
4050 case 'f':
4051 flags = MS_FORCE;
4052 break;
4053 case '?':
4054 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
4055 optopt);
4056 (void) fprintf(stderr, gettext("usage: unmount [-f] "
4057 "<path>\n"));
4058 return (2);
4059 }
4060 }
4061
4062 argc -= optind;
4063 argv += optind;
4064
4065 /* check arguments */
4066 if (argc != 1) {
4067 if (argc == 0)
4068 (void) fprintf(stderr, gettext("missing path "
4069 "argument\n"));
4070 else
4071 (void) fprintf(stderr, gettext("too many arguments\n"));
4072 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n"));
4073 return (2);
4074 }
4075
4076 return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE));
4077}
4078
4079static int
4080volcheck(zpool_handle_t *zhp, void *data)
4081{
4082 boolean_t isinit = *((boolean_t *)data);
4083
4084 if (isinit)
4085 return (zpool_create_zvol_links(zhp));
4086 else
4087 return (zpool_remove_zvol_links(zhp));
4088}
4089
4090/*
4091 * Iterate over all pools in the system and either create or destroy /dev/zvol
4092 * links, depending on the value of 'isinit'.
4093 */
4094static int
4095do_volcheck(boolean_t isinit)
4096{
4097 return (zpool_iter(g_zfs, volcheck, &isinit) ? 1 : 0);
4098}
4099
4100static int
4101find_command_idx(char *command, int *idx)
4102{
4103 int i;
4104
4105 for (i = 0; i < NCOMMAND; i++) {
4106 if (command_table[i].name == NULL)
4107 continue;
4108
4109 if (strcmp(command, command_table[i].name) == 0) {
4110 *idx = i;
4111 return (0);
4112 }
4113 }
4114 return (1);
4115}
4116
4117int
4118main(int argc, char **argv)
4119{
4120 int ret;
4121 int i;
4122 char *progname;
4123 char *cmdname;
4124
4125 (void) setlocale(LC_ALL, "");
4126 (void) textdomain(TEXT_DOMAIN);
4127
4128 opterr = 0;
4129
4130 if ((g_zfs = libzfs_init()) == NULL) {
4131 (void) fprintf(stderr, gettext("internal error: failed to "
4132 "initialize ZFS library\n"));
4133 return (1);
4134 }
4135
4136 zpool_set_history_str("zfs", argc, argv, history_str);
4137 verify(zpool_stage_history(g_zfs, history_str) == 0);
4138
4139 libzfs_print_on_error(g_zfs, B_TRUE);
4140
4141 if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) {
4142 (void) fprintf(stderr, gettext("internal error: unable to "
4143 "open %s\n"), MNTTAB);
4144 return (1);
4145 }
4146
4147 /*
4148 * This command also doubles as the /etc/fs mount and unmount program.
4149 * Determine if we should take this behavior based on argv[0].
4150 */
4151 progname = basename(argv[0]);
4152 if (strcmp(progname, "mount") == 0) {
4153 ret = manual_mount(argc, argv);
4154 } else if (strcmp(progname, "umount") == 0) {
4155 ret = manual_unmount(argc, argv);
4156 } else {
4157 /*
4158 * Make sure the user has specified some command.
4159 */
4160 if (argc < 2) {
4161 (void) fprintf(stderr, gettext("missing command\n"));
4162 usage(B_FALSE);
4163 }
4164
4165 cmdname = argv[1];
4166
4167 /*
4168 * The 'umount' command is an alias for 'unmount'
4169 */
4170 if (strcmp(cmdname, "umount") == 0)
4171 cmdname = "unmount";
4172
4173 /*
4174 * The 'recv' command is an alias for 'receive'
4175 */
4176 if (strcmp(cmdname, "recv") == 0)
4177 cmdname = "receive";
4178
4179 /*
4180 * Special case '-?'
4181 */
4182 if (strcmp(cmdname, "-?") == 0)
4183 usage(B_TRUE);
4184
4185 /*
4186 * 'volinit' and 'volfini' do not appear in the usage message,
4187 * so we have to special case them here.
4188 */
4189 if (strcmp(cmdname, "volinit") == 0)
4190 return (do_volcheck(B_TRUE));
4191 else if (strcmp(cmdname, "volfini") == 0)
4192 return (do_volcheck(B_FALSE));
4193
4194 /*
4195 * Run the appropriate command.
4196 */
4197 if (find_command_idx(cmdname, &i) == 0) {
4198 current_command = &command_table[i];
4199 ret = command_table[i].func(argc - 1, argv + 1);
4200 } else if (strchr(cmdname, '=') != NULL) {
4201 verify(find_command_idx("set", &i) == 0);
4202 current_command = &command_table[i];
4203 ret = command_table[i].func(argc, argv);
4204 } else {
4205 (void) fprintf(stderr, gettext("unrecognized "
4206 "command '%s'\n"), cmdname);
4207 usage(B_FALSE);
4208 }
4209 }
4210
4211 (void) fclose(mnttab_file);
4212
4213 libzfs_fini(g_zfs);
4214
4215 /*
4216 * The 'ZFS_ABORT' environment variable causes us to dump core on exit
4217 * for the purposes of running ::findleaks.
4218 */
4219 if (getenv("ZFS_ABORT") != NULL) {
4220 (void) printf("dumping core by request\n");
4221 abort();
4222 }
4223
4224 return (ret);
4225}
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